Latest articles by Tanya Lewis
St Patrick's Day: 5 facts about this most Irish of celebrations
Why we wear green and other holiday curiosities.
Why It Pays to Be a Bit of a Psychopath
The Machiavellians among us only cooperate when it suits them.
5 Fascinating Facts About Fetal Ultrasounds
Obstetric ultrasound has a fascinating history, in both technical and social terms.
Human heart: Anatomy, function & facts
Reference The human heart is an organ that pumps blood throughout the body via the circulatory system.
Monkey Lip-Smacking Resembles Human Speech
Gelada monkey sounds could be an evolutionary step toward human language.
Lobotomy: Definition, procedure and history
Lobotomy is a neurosurgical operation that involves severing connections in the brain's prefrontal lobe.
Human brain: Facts, functions & anatomy
The human brain is the command center for the human nervous system.
7 ways the election will shape the future of science, health and the environment
Climate change, nuclear arms control, the pandemic and more will be determined by whoever wins the White House and Congress.
What Is Inflammatory Bowel Disease?
Inflammatory bowel disease (IBD) is a condition that involves chronic inflammation in all or part of the digestive tract.
What is an MRI (Magnetic Resonance Imaging)?
Magnetic resonance imaging (MRI) uses powerful magnets to realign a body's atoms, which creates a magnetic field that a scanner uses to create a detailed image of the body.
Amyotrophic Lateral Sclerosis (ALS): Facts & Symptoms of Lou Gehrig's Disease
Ice bucket challenges aside, treatment for amyotrophic lateral sclerosis (ALS), a progressive and fatal neurological disease, is limited. However, promising research is ongoing.
Poison Ivy: Rash, Treatment & Pictures
Poison ivy is a toxic plant that causes an itchy and sometimes painful rash in most people when they touch it.
Goliath Birdeater: Images of a Colossal Spider
Imagine a spider as big as a child's forearm that weighs as much as a puppy. That's how huge the South American Goliath birdeater — arguably the world's largest spider — can be.
Photos: Grizzlies & Black Bears Cross the Trans-Canada Highway
Black bears and grizzly families are shown using highway underpasses and overpasses to get across the road.
Saturn's Moon Titan Has Polar Winds, Just Like Earth
In our solar system, the objects with rainfall, rivers and oceans can be counted on two fingers: Earth, and Saturn's moon Titan. Both also share a thick atmosphere, rocky ground and plate tectonics.
Art-ificial Intelligence? Algorithm Sorts Paintings Like a Person
From assembly-line work to self-driving cars, computers are taking over many tasks once performed by humans. Artistic jobs, however, have been relatively safe — until now.
Gangnam Style! Robots Dance & Slither at DARPA Challenge
From robots that scuttle like spiders to ones that dive underwater, a menagerie of amazing machines were on display this weekend at the DARPA Robotics Challenge Finals.
