Poaching problem

Poaching problem
As elephant poaching soars, carbon dating, a mainstay of archeology, could be used to date ivory, based on heavy isotopes left over More »

Counting bugs in Panama

Counting bugs in Panama

Life is biology is species: But how many species live on Earth? About six million arthropods (insects, spiders and crustaceans), says a More »

Chasing neutrinos at the South Pole

Chasing neutrinos at the South Pole

Neutrinos are odd: Extremely difficult to see, they travel through mass with scarcely a trace. A 1-billion ton detector in South Pole More »

Dr. Darwin teaches robot!

Dr. Darwin teaches robot!

A crash course in “sink or swim” teaches computerized robots to adapt to changing circumstances. When taught by “directed evolution,” More »

Watching a continental split

detail of labelled, satellite view of Baja California and Sea of Cortez

Seismic study shows crust thinning as continent divides, giving another view of our restless planet, showing tectonic movement in More »

Ancient hole, black hole

Ancient hole, black hole

A new report on the ancient universe shows that most galaxies – even all of them – had a black hole at the center, much like modern More »

Testing seafood in the Gulf

Testing seafood in the Gulf

Fish contamination was rare after the giant oil spill in the Gulf of Mexico in 2010, with levels of dangerous hydrocarbons well below More »

Stem cell battle resumes

Black and white image of woman in wheelchair seen from the back in a hospital hallway

A federal court has thrown the field of embryonic stem cell research into confusion. Last week, research that destroys embryos could More »

North Korea’s nukes

North Korea’s nukes

Underground nuclear tests have been the biggest roadblock to a comprehensive test ban. How are these explosions detected, and how More »

Counting birds

Counting birds

The feds put out a massive report on American birds, and the #1 source of data is – amateurs! What is the role of amateurs in More »

Embryonic stem cells

Embryonic stem cells

Pres. Obama has removed some limits on studies of cells that can become any body cell. What was lost in eight years of limits on More »