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LifeFossil helps document shift from sea to land
New fossils of an ancient, four-limbed creature help fill in the blanks of the evolutionary transition between fish and the first land-adapted vertebrates.
By Sid Perkins -
AstronomyImpact may have transformed Mars
Three teams suggest that a huge object slammed into Mars, giving the planet an unusually dualistic topography.
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PlantsMove it or lose it
Climate change may have dire consequences for California’s native plants, which may need to take refuge in some the areas under pressure for development.
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AnimalsDon’t blame the guys
Scientists take a new look at what drives female damselflies to look like males.
By Susan Milius -
EarthResonating with the ocean
An experiment may explain the origin of underwater waves that shape the sediment of continental slopes.
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Health & MedicineCh-ch-ch-changes
Epigenetic shifts continue throughout a person’s lifetime, and the overall pattern of these shifts appears similar within families.
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SpaceSafe from black holes
The Large Hadron Collider could generate black holes, but they would be too tiny and short-lived to do any harm and would be no more malevolent than the cosmic rays constantly bombarding Earth, two new reports find.
By Ron Cowen -
EcosystemsHuman ‘Signature’ in Fish Losses
Why the whales-ate-my-fish argument doesn't hold water.
By Janet Raloff -
Health & MedicineHeel test
A simple, inexpensive ultrasound test of the heel might reveal whether a person is at risk of osteoporosis and should get more extensive tests.
By Nathan Seppa -
EcosystemsOn Whales’ Appetites: What a Waste
An advocacy group and renowned scientist floundered in an attempt to compel opinion shapers with the science showing that industrial fleets, not whales, pose a serious threat to fish stocks.
By Janet Raloff -
LifeNearly immortal sea creature spreads
Hydrozoan with reversible life cycle now found worldwide.
By Susan Milius -
Health & MedicineCurative leaf
Compound in marijuana reduces inflammation without the psychological effects.
By Amy Maxmen