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Walked or swam? An index can answer
How do scientists figure out even basic facts such as whether an animal walked on land or swam in the sea?
2 years, 7 months ago
Play and the brain
Researchers classify an animal behavior as play when it doesn’t involve an external reward, such as food, seems to serve no purpose, occurs repeatedl…
2 years, 7 months ago
What we can learn from ancient climate records
Scientists find clues to how the earth's climate is changing by looking to the past.
2 years, 7 months ago
Tetrataenite as a solution to the rare earth crisis
Demand for rare earth elements is soaring, and it will continue to grow in the future.
2 years, 7 months ago
The effects of bismuth in Pepto Bismol
When the bismuth combines with the trace amounts of sulfur in your saliva and in your gastrointestinal tract, it reacts to form a black substance cal…
2 years, 7 months ago
King Tut's dagger from space
King Tutankhamen of Egypt has fascinated people ever since archeologist Howard Carter discovered his splendid tomb in 1922.
2 years, 8 months ago
Where does bitterness come from? Ask the sharks
Bitterness, like sweetness or saltiness, is one of the major taste sensations. And while it makes our food flavorful, detecting bitterness can someti…
2 years, 8 months ago
Remembering the past, as a baby
What's your earliest memory?
2 years, 8 months ago
Why are sunrises faster than sunsets?
It takes much less time for the sun to light up the sky at dawn than it does for all the light to disappear after the sun sets at dusk.
2 years, 8 months ago
The temperature of ice on a hot day
If you drink a glass of ice water on a hot day, what temperature is the ice?
2 years, 8 months ago