All Stories
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		AnimalsThis glass frog wears its heart for all to see
A newly discovered glass frog species has skin so clear that it reveals most of the animal’s internal organs, including the heart.
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		LifeFlight demands may have steered the evolution of bird egg shape
An analysis of nearly 50,000 bird eggs finds a link between a species’ egg shape and flight ability.
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		LifeScientists spy on the secret inner life of bacteria
New images reveal the inner workings of bacteria.
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		Health & MedicineWhen should babies sleep in their own rooms?
A new study offers support to sleep-starved parents by suggesting that babies age 6 months and older sleep longer when in their own bedroom.
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		Health & MedicineBones make hormones that communicate with the brain and other organs
Bones send out hormone signals that chat with other parts of the body, studies in mice show. What influence these hormones have in people, though, remain a mystery.
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		Health & MedicineProtein in Parkinson’s provokes the immune system
The immune system recognizes parts of a protein linked to Parkinson’s disease as foreign, triggering an autoimmune response.
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		Health & MedicineA baby’s DNA may kick off mom’s preeclampsia
A large genetic analysis points to a protein made by the fetus that may trigger preeclampsia in the mom.
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		PhysicsHere’s why your wheelie suitcase wobbles
Physicists explain why roller suitcases rock back and forth as you dash through the terminal.
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		AstronomySatellite trio will hunt gravitational waves from space
The European Space Agency has green-lighted the Laser Interferometer Space Antenna, expected to launch in 2034.
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		EnvironmentNew material could filter water contaminants that others miss
A new polymer offers a better way to pull fluorine-containing pollutants out of drinking water.
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		AstronomyKepler shows small exoplanets are either super-Earths or mini-Neptunes
The final catalog from the Kepler space telescope splits Earthlike exoplanets into two groups and pinpoints 10 new rocky planets in the habitable zone.
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		GeneticsDNA reveals how cats achieved world domination
Analysis of 9,000 years of cat remains suggests two waves of migration