NASA-funded researchers have identified a possible cause of giant bubbles that often form above the equator in the electrically charged upper atmosphere. These bubbles, manifestations of a phenomenon ...

Plant life is a hard life when it comes to fending off insects, and the farther one gets from the equator, the more difficult it can be, according to a study on plant-insect interactions published ...

One of the largest field experiments ever conducted is providing the best evidence yet in support of a key Darwinian theory--that interactions between species are stronger toward the tropics and at ...

INSECT LAB — Rupesh Kariyat inspects Petri dishes with rice leaves and fall armyworms at his lab on the University of Arkansas, Fayetteville campus. FAYETTEVILLE, Ark. — Plant life is a hard life when ...