Lockheed Martin develops maple-seed-like drone

The seeds that drop from maple trees each fall, whirring softly to the ground like silent one-winged helicopters, are the inspiration for a new kind of flying machine that could be useful for military information-gathering.

Climate change threatens many tree species: researchers

Global warming is already affecting the earth in a variety of ways that demand our attention. Now, research carried out at the Hebrew University of Jerusalem indicates that many tree species might become extinct due to climate ...

Forestry officials on urgent mission: Beetles

(AP) -- Forestry officials in the Northeast are on an urgent mission, tracking thousands of Massachusetts residents as they search for tree-eating stowaway insects they may have carried to campgrounds or vacation homes.

Tree species composition influences nitrogen loss from forests

Throughout the world, nitrogen compounds are released to the atmosphere from agricultural activities and combustion of fossil fuels. These pollutants are deposited to ecosystems as precipitation, gases, and particles, sometimes ...

page 3 from 3