Tag Archives: Science

WHAT’S SO SPECIAL ABOUT THE HUMAN BRAIN?

AA1Why do we study other animals and they don’t study us? What is it about the human brain that allows the cognitive ability for abstract reasoning and creativeness? What is it that makes the human brain so special? It comes down to one thing that humans do that no other living creature does.

I just watched a fascinating TED Talk by neuroscientist Dr. Suzana Herculano-Houzel where she looks at the difference in animal brain structures and arrives at a shocking, yet simple explanation.

AA6For years, mainstream science assumed that there was a direct relationship to the rate of intelligence and the size of the brain. However if you look at the brain of a cow to the brain of a chimp, they both weigh around 400 grams. Using that theory, the two species should have about the same intelligence. Carrying it further, a human brain weighs about 1.5 kilograms, an elephant’s is 4.5 kilos, and a blue whale tops out at 9 kg. Something clearly is wrong with the size of the brain vs. intelligence theory.

Is there an intelligence relationship in the size of an animal’s brain to the size of its body?

Take gorillas for instance. Their bodies average 180 kg and their brains are 0.5 kg. Human bodies average 75 kg and our brains are 1.5 kg. So the human brain to body ratio are 7.2 times larger than gorillas and we appear to be a lot smarter – although that’s debatable with some people.

But the daily energy consumption that a human brain requires is proportionately much higher than a gorilla’s brain.

AA8Gorillas spend most of their day feeding to supply energy in keeping a larger body mass fuelled, whereas humans only require three quick meals to support a smaller body but a larger and more active brain. Human brains are only 2% of our body mass but require 25% of our energy consumption to operate. Gorilla brains only consume 10% of their daily calorie intake. So what’s going on here?

Dr. Herculano-Houzel researched the long-held assumption that there was a direct proportion of neurons, or thought processors, per weight of grey matter. It was thought that the human brain held around 100 billion neurons but she could not find the source of this information. So she decided to do some experimentation.

AA9She developed a process to extract neuron nuclei from grey-matter cells and established that the average human brain contains 86 billion neurons – 16 billion in our cerebral cortex alone, which is by far the highest in any species and the seat of cognitive awareness.

She observed that there was nothing different in the basic structure between human brains and other primates like gorillas, chimps, and orangutans. And yes, humans are just another species of primate. It’s just that we have a much higher brain to body size ratio and we have a lot more neurons that our cousins do.

AA13But our brain to body energy requirements are so much higher than apes, yet we feed far less. This led her to ask the question – What happened in our evolutionary process that made human brains so proportionately larger?

Anthropology determines that the human brain suddenly increased about 1.5 million years ago. Something else happened at the same time.

Humans learned to cook their food.

AA12We learned to use fire to pre-digest our caloric intake which supercharged the ability to fuel and grow the brain. Because of cooking high-calorie, high-protein foods, our brain size rapidly increased to becoming a large energy-consuming asset rather than a liability.

Humans spent far less time searching for, devouring, and digesting low calorie raw vegetative foods than other primates did. Our omnivorous diet allowed us to focus our cerebral cortex on developing better food processing ventures like agriculture, civilization, electricity, and supermarkets.

So what do we do that no other creature does?

We cook.

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AA15Watch Dr. Suzana Herculano-Houzel’s fascinating, 13 minute TED Talk here: 

http://thenewhypnotists.com/solving-puzzle-human-brain-13-minutes-will-stun/

Visit her website at: http://www.suzanaherculanohouzel.com/lab

CASE ACADEMY – NEW EDUCATIONAL SITE FROM FORENSIC OUTREACH

Case2Forensic Outreach is one of the coolest sites on the internet for crime writers and forensic junkies. It’s an educational organization that specializes in public engagement on forensic, crime, and security science disciplines.

On February 17, 2015, Forensic Outreach is launching a remarkable new project on Kickstarter called CASE Academy.

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Alongside an already incredible virtual faculty and by combining powerful learning tools, CASE Academy is an interactive online school that provides resources — lectures, games, and simulations — for students, educators, and anyone who is fascinated by these subjects. For those that don’t know, Kickstarter is a prominent crowdfunding platform that will assist CASE Academy to build direct relationships with future students from the beginning.

Case6Forensic Outreach has been a dynamic and active part of the science curriculum in classrooms throughout the United Kingdom and Europe since 2001, although it was re-launched on the web last year to broadly deliver CSI workshops.

Their events and outreach programs are facilitated by instructors, trainees, interns, volunteers, and law students from UCL, King’s College, Birmingham, and Newcastle.

Conceived to introduce forensics as an integrative and cross-disciplinary approach to science education, Forensic Outreach has worked with over one hundred academic institutions and charities. Now, as part of their online public engagement activities, they’re assembling a team of talented writers, regular contributors and podcasters to record and deploy our broadcasts.

Case7Forensic Outreach has developed partnerships with local police forces across the UK, the JDI Centre for the Forensic Sciences at University College London, the Barts Museum of Pathology, and the Center for Forensic Science Research and Education in the USA. They’ve delivered events for a number of high-profile institutions, including the Museum of London.

The JDI Centre is a multi-disciplinary initiative that aims to contribute significantly to the development of the forensic sciences, in part through collaborative projects with Forensic Outreach. They’ve also worked alongside local community groups to deliver masterclasses to adults learners and led one-off presentations for interested individuals for science-themed meet-up gatherings.

Case4I first connected with the folks at Forensic Outreach via Twitter and instantly became a leading fan and supporter as I was so impressed by the depth and variety of their quality content.

Here’s some examples of the great entertaining and educational information that you’ll find in Forensic Outreach:

A collage of the top fifty crime/security/science articles for 2014. There’s fascinating stuff in here like The Grisly History of Forensics, Stranger than Crime Fiction, and The CSI Effect – Are Juries Being Blinded by Science?

http://forensicoutreach.com/bookmark-these-top-50-articles-on-crime-security-and-science/

CASE15Three real-life forensic tools straight out of science-fiction. Here’s tomorrow’s technology that’s being used today – scene replication through virtual walk-thrus, autopsies without scalpels, and computerized facial recognition in crowds.

http://forensicoutreach.com/3-real-life-forensic-tools-straight-out-of-science-fiction/

Fifty incredible women in Science, Technology, Engineering, and Math (STEM). No doubt you’ve heard of Facebook’s Sheryl Sandberg, but do you know who Ory Okolloh Mwangi, Dr. Sue Black, Caitlin Doughty, or DN Lee are?

http://forensicoutreach.com/2014s-50-most-incredible-women-in-stem-in-no-particular-order/

PrintTwenty-five eccentric, weird, and wonderful crime & science blogs. Check out Morbid Anatomy, Strange Remains, The Chick and the Dead, Bones Don’t Lie, or my favourite – Mortuary Report.

http://forensicoutreach.com/25-eccentric-weird-wonderful-science-blogs-we-love/

Three real-life scientists who are larger than their TV counterparts. Meet police criminologist Daniel Holstein, forensic pathologist Dr. Michael Baden, and forensic biologist Dr. Neal Haskell.

http://forensicoutreach.com/3-more-real-life-scientists-way-cooler-than-their-tv-counterparts/

_DM30254 (2)Here’s the fifty best crime writers to watch for. Some knowns and lesser-knowns on the list are Lee Child, James Rollins, Jo Nesbo, Louise Penny, MJ McGrath, Max China, but unfortunately not Garry Rodgers. See who else made the list.

http://forensicoutreach.com/successors-to-the-greats-the-top-50-best-crime-writers-to-watch-in-2014/

Learn six methods of firearm & ballistic identification. Find out about striations, GSR, tissue damage, trajectory and impressions.

http://forensicoutreach.com/6-remarkable-ways-guns-can-be-linked-to-a-crime-scene/

This is only a sampling of the tremendous material that you’ll find on Forensic Outreach.

Case14Now, as part of their online public engagement activities, they’re assembling a team of talented writers, regular contributors, and podcasters to record and deploy their broadcasts. Forensic Outreach is now leaping beyond their original purpose and aims to reach a wider audience through online public engagement campaigns like CASE Academy.

The Kickstarter launch “army” includes hundreds of people just like you and me – STEM educators, science communicators, journalists, serial podcast addicts, crime writers, and more.

Case17I’m writing this post because I so strongly believe in the credibility and value that Forensic Outreach has. I know that CASE Academy is going to be a deadly success and I’m asking you to help make it an incredible virtual school. Please support this excellent venture by shouting out on social media, or if you feel even more generous, you can donate to the Kickstarter campaign as well.

Remember, Tuesday, February 17, 2015, is launch day for the CASE Academy Kickstarter campaign. It starts at 14:00 GMT.

Please join the Kickstarter army by signing onto the Quick Button on the CASE Academy website at http://case.forensicoutreach.com/

Case2Or visit the main Forensic Outreach website at http://forensicoutreach.com/

Help them out on Twitter – @ForensicFix  https://twitter.com/forensicfix using  #caseacademy .

Like & follow Forensic Outreach on Facebook  https://www.facebook.com/forensicoutreach

Check out their Goodreads page at http://www.goodreads.com/group/show/149154-case-academy-kickstarter—crime-mystery-readers-and-writers

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And help me boost traffic for my friends at Forensic Outreach and CASE Academy by passing this on through all of your social media connections.

 

BREAKTHROUGHS IN FORENSIC TECHNOLOGY

tech1Technology has made huge breakthroughs over the past thirty-five years that I’ve been around criminal and forensic investigation (CSI). Without question, the next thirty-five are going to bring mind-blowing advances. I’ve looked into my forensic crystal ball to come up with five things I think will be real by 2050.

But first… let’s look at the top five since 1980.

1. Computers

When I started policing, the PC was unheard of.

tech2The only computing system we had was a mammoth of a beast that filled-up many rooms at headquarters. CPIC, or the Canadian Police Information System, was in its infancy as was its American counterpart, NCIC or National Criminal Intelligence Center. Both systems are still around but, instead of having to phone to book appointments to use the system, the information now comes straight to the patrol cars or to a detective’s smart device.

Computers have affected every facet of forensic investigation.

Despite complex computerized analysis being fast and accurate, the routine is much easier. Report writing is far simpler – no more carbon paper to make multiple copies, no more white-out, and thank God for spell-check. Communications are instant with internet email and gone are the days of waiting for a report to show up in snail mail. Training is done through computerized simulation, sketching is replaced by computer-aided drawing, and administration is now done by the keyboard. Computers are what allowed the next four advances to occur.

2. AFIS – Automated Fingerprint Identification System

tech3The science of fingerprinting has been around nearly one hundred and fifty years, but the mechanism of storage and matching prints was cumbersome. Known prints from criminals used to be rolled in ink and stored on paper and the latent prints from crime scenes were lifted in powder were stored in plastic sheets. There was no effective system to easily match the two. Today, suspect prints are digitally scanned and stored in data bases. Latent prints are still lifted in conventional manners, but they’re then scanned and put into a search engine where they can be matched right from the crime scene.

3. Photography

tech4Today’s digital photography is a tremendous time-saver compared to the days of negative and image development. It’s instantaneous to share over the internet, even allowing an investigator to snap a digital photo in the field and email it to the other side of the world. Another facet of crime fighting is the incredible amount of mobile and stationary cameras that are out and about in society which capture movements of criminals before, during, and after events. Many crooks have gone down because they failed to realize they were on camera.

4. Education

tech5Today’s forensic investigators are far better educated than in the 1980’s. Much of that is due to the ease of which information can be shared. Where it used to take great blocks of time and huge resources to assemble courses and conferences, many agencies now use webinars and on-line presence to create ‘virtual’ classrooms. Education and sharing information are the jewels in crime-fighting.

5. DNA

tech13Deoxyribonucleic acid or genetic fingerprinting is probably the best crime-fighting tool ever developed. Today, thanks to the computer, the sophistication and expediency of DNA testing has led to it being commonly – and accurately – used in the majority of serious crime investigations. Many convictions have been secured on DNA evidence alone. Conversely, many innocent people have been cleared of suspicion due to elimination by DNA typing.

So that’s what happened over the past third century. Ever wonder what’s going to happen over the next third?

Well, I’m gazing into the crystal ball and predict five things.

1. Holograms

tech73-D technology is commonplace in movies and on TV. Many criminal prosecutions are already presented through computer-aided reconstruction to lay out the scene, bullet paths, vehicle motions, and blood-spatter patterns.

I see a day when virtual-reality holograms are imaged in the middle of the courtroom so the jurors can watch a total recreation of how the crime went down.

2. Brain-Scan Polygraphs

tech8Conventional polygraphs have only slightly evolved in three decades and that was by the replacement of the old ink-needle charts with laptop technology. The basics of polygraphy still depends on the ability of a skilled operator to formulate key questions and then interpret the subject’s involuntary body reactions – pulse, respiration, blood pressure, galvanic skin responses, and perspiration.

I see a day when brain mapping and analysis of how a subject responds under electroencephalography (EEG) and function magnetic resonance imaging (fMRI) will replace the current polygraph. The technology is already here and research is underway towards its forensic application.

2. Laser Devices

tech9I think lasers have phenomenal potential in forensics. Currently, laser lighting is used to amplify fingerprint and tool marking evidence. It’s also used in ballistic matching where the old electron-scanning comparison microscopes are being replaced by laser/laptop examiners like the Bullettrax 3D which makes the peaks and valleys of a ballistic engraving show up like satellite ground mapping radar images.

I see a day when forensic investigators will map out a crime scene with hand-held laser devices to perfectly record information which will be transformed into hologram reproductions.

4. Ion-Sniffers

tech10Detection of ions through gas chromatography mass spectrometers has been around fifty plus years and is still used daily in crime labs. What’s missing are portable devices to assist in field searches of buildings, vehicles, boats, planes, and the great outdoors. Often investigators know exactly what they’re looking for – a firearm, explosives, contraband, or even a dead body – but the parameters of the search area turn it into the needle-in-a-haystack scenario.

I see a day when the ionic signature of the article(s) being searched for are dialled into the device and it zooms right into the location.

5. Satellite Tracking of Dangerous Criminals

tech11Over the past few decades we’ve got a better handle on controlling violent and prolific offenders through DNA profile banks and ankle bracelets of parolees. We’ve also had tremendous advances in satellite technology where smart-bombs are delivered down terrorist’s chimneys and GPS aps tell you exactly where you are on the planet. We have microchips in everything from our bank cards to our pet Schnauzers and there are more cell phones in Africa than people. What we don’t know is where the dangerous .001 percent of the population are and have been.

AB23479I see a day that we’ll ditch these guy’s rights. We need to protect the 99.999 percent of the population that’s at risk. Common sense will prevail and there’ll be court orders mandating satellite tracking chips being surgically implanted into dangerous offenders.

I’ll check back with you in 2050. It’ll be interesting to see what I’ve missed.