Science

An Australian bay has gotten a bit too crowded for the local octopuses, who have been fighting and bullying each other. They now appear to be hurling shells as weapons — and there's video evidence.

Earth is home to more than 3 trillion trees, a new map of forest density shows. That's more than anyone realized. But the total is also down about 46 percent since the first humans arrived.

A massive effort to test the validity of 100 psychology experiments finds that more than 50 percent of the studies fail to replicate. This is based on a new study published in the journal "Science."

Consumers who prefer reusable bags tend to buy more organic food. Researchers say that makes sense, given that the bags suggest a concern for the environment. But they also buy more junk food.

Research indicates companies with owners from countries that have been shown to have higher levels of corruption are more likely to evade taxes in the United States.

Why do people like to play matchmaker? New research finds that matchmaking produces happiness and, the more unlikely the match, the greater the happiness for the matchmaker.

A new meta-analysis of trigger bias, drawing on 42 studies, found that when asked to evaluate a threat, people tend to shoot at black targets more often than white targets — and to do so more quickly

A University of California, Berkeley psychologist has found that people can create a map in their heads with scents as location markers. NPR replicates the experiment with a master sommelier, and discovers that olfactory navigation is lot more successful if you have a sophisticated nose.