Study shows loss of 15-42 percent of mammals in North America

Biology / Ecology

16 hours ago | 3.4 / 5 (5) | 5

If the planet is headed for another mass extinction like the previous five, each of which wiped out more than 75 percent of all species on the planet, then North American mammals are one-fifth to one-half the way there, according ...

Heme channel found

Biology / Cell & Microbiology

11 hours ago | not rated yet | 0

In some ways a cell in your body or an organelle in that cell is like an ancient walled town. Life inside either depends critically on the intelligence of the gatekeepers.

New research explains orchids' sexual trickery

Biology / Plants & Animals

11 hours ago | 4.7 / 5 (3) | 0

A new study reveals the reason why orchids use sexual trickery to lure insect pollinators. The study, published in the January issue of The American Naturalist, finds that sexual deception in orchids leads to a more effici ...

Headwater stream nutrient enrichment disrupts food web

Biology / Ecology

11 hours ago | 3.7 / 5 (3) | 0

Human activity is increasing the supply of nutrients, such as nitrogen and phosphorus, to stream systems all over the world. The conventional wisdom -- bolstered by earlier research -- has held that these additional nutrients ...

Wild chimps have near human understanding of fire, study says

Biology / Plants & Animals

13 hours ago | 5 / 5 (4) | 0

(PhysOrg.com) -- The use and control of fire are behavioral characteristics that distinguish humans from other animals. Now, a new study by Iowa State University anthropologist Jill Pruetz reports that savanna ...