Invasive species costing Africa $3.66 tn a year: study

Invasive species introduced by human activity are costing African agriculture some $3.66 trillion every year—around 1.5 times the combined gross domestic product of all African countries—new research showed Thursday.

Rare plants attract rare bees and birds in urban gardens

Urban gardens can be hotspots for biodiversity in cities, but little is known about what drives the biodiversity of species existing at the smallest frequencies, or rare biodiversity. Rare plant species in urban gardens attract ...

Weedy rice is unintended legacy of Green Revolution

A new global study reveals the extent to which high-yielding rice varieties favored in the decades since the "Green Revolution" have a propensity to go feral, turning a staple food crop into a weedy scourge.

First evidence of farming in Mideast

Until now, researchers believed farming was "invented" some 12,000 years ago in the Cradle of Civilization—Iraq, the Levant, parts of Turkey and Iran—an area that was home to some of the earliest known human civilizations. ...

Fighting a mighty weed

Weeds are pesky in any situation. Now, imagine a weed so troublesome that it has mutated to resist multiple herbicides. Palmer amaranth, a member of the pigweed family, is spreading across states and growing in strength. ...

page 2 from 35