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Science / Human Behavior

People Get Seasonal Depression in the Summer, Too

Millions suffer from SAD in summer as well as winter, and evidence hints that birth season plays a role in who develops the disorder

Penicillin: a fuzzy little life saver.

11 Reasons to Love Bacteria, Fungi and Spores

From medicines to jet fuel, we have so many reasons to celebrate the microbes we live with every day

Eight New Things Science Says About Being a Dad

They’re still not very good at cooing to toddlers, and their testosterone levels start to drop even before a baby is born

Who's a widdle smarty pants?

The Many Ways Baby Talk Gives Infant Brains a Boost

From a higher vocabulary to mastering mouth motion, the lilting babble seems to play a key role in helping babies process language

New Research

Investigating the Case of the Earliest Known Murder Victim

A 430,000-year-old skull discovered in a Spanish cave bears evidence of deliberate, lethal blunt force trauma

At 3.3 million years old, tools unearthed at the Lomekwi 3 excavation site in Kenya, like the one pictured above, represent the oldest known evidence of stone tools, researchers suggest.

The Oldest Stone Tools Yet Discovered Are Unearthed in Kenya

3.3 million-year-old artifacts predate the human genus

10 New Things Science Says About Being a Mom

Such as, how much time she spends with her child doesn’t matter as much as we think

In a recent ad campaign, portraits of litterers made from DNA taken from tossed cigarettes, coffee cups and condoms were posted in public places around Hong Kong.

DNA Testing Could Identify Litterbugs and Dog Poop Miscreants

Anonymous crimes may not be quite so anonymous anymore

New Research

What Does It Feel Like to Be Invisible?

Volunteers in Sweden were tricked into thinking their bodies had vanished, and the “superpower” seemed to ease social fears

Ask Smithsonian: How Do People Get Phobias?

The origins of irrational fears

Doing science in the field wrecks havoc on the nails

Just Another #ManicureMonday for Women Scientists and Their Dirty Nails

For a Smithsonian researcher, Monday is a day to honor the women in science and other uses for nail polish

Researchers found that human joint-bone density remained pretty high until recently in our evolutionary history, around the same time that humans began switching from hunting and gathering to farming.

Switching to Farming Made Human Joint Bones Lighter

A more fragile skeleton evolved about 12,000 years ago, probably driven by a shift from hunting to agriculture

That first dip into a hot spring may actually send chills over your skin.

Why Does Very Hot Water Sometimes Feel Cold?

The weird sensation known as paradoxical cold has scientists locked in a heated debate

"Once more unto the breach, dear friends … "

Shopping on Black Friday Makes You Feel Like a Well-Loved Warrior

A powerful cocktail of social bonding and competitive adventure will compel more than 95 million people to hit the stores on one day

Probably not a picky eater.

Why Are You a Picky Eater? Blame Genes, Brains and Breast Milk

The complicated science behind picky eating is giving experts plenty of food for thought

Why Do Humans Have Thumbs?

There’s a never-ending stream of theories about Homo sapiens’ most important digit

A fragmented painting of a pig-deer or babirusa (Babyrousa sp.) and hand stencil from one of the caves in Sulawesi, Indonesia.

Rock (Art) of Ages: Indonesian Cave Paintings Are 40,000 Years Old

Cave paintings of animals and hand stencils in Sulawesi, Indonesia, seem to be as old as similar cave art in Europe

Our fundamentally human social, ecological, and behavioral adaptations have, over time, ratcheted up our adaptability.

Anthropocene

The Moral Dilemma We Face in the Age of Humans

Humans are proficient problem solvers—but so far that trait has come at a cost. Can our species remain resilient without destroying the world?

Fireworks over Beijing during 2013's Lantern Festival

To Limit Pollution, The Chinese Are Faced With Giving Up an Ancient Tradition

For the Chinese, who invented both gun powder and fireworks, foregoing old traditions may clean up the air—just a bit

Vice-grips Fossil (detail), 2014, wood, oil paint, polyurethane, pigment, marble dust, cast plastic.

Anthropocene

What Will We Leave in the Fossil Record?

Artist Erik Hagen considers the remnants of modern human life that may be found in rock strata millions of years from now

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