Earth
- Earth
Treaty enacted to preserve crop biodiversity
The United Nations enacted a new international treaty to halt the erosion of genetic diversity of crops.
By Janet Raloff - Earth
City Heat: Urban areas’ warmth affects plant growth
Satellite observations of eastern North America show that plants in and around urban areas bud earlier in the spring and retain their foliage later in the fall than do plants in nearby rural settings.
By Sid Perkins - Agriculture
Plastic vs. Plants: Mulch method changes tomato’s gene activity
A suite of at least 10 genes in a tomato plant behaves differently depending on the farmer's mulch-and-fertilizer routine.
By Susan Milius - Earth
Just a Tad Is Too Much: Less is worse for tadpoles exposed to chemicals
The herbicide atrazine is more likely to kill developing amphibians when it is highly diluted than when it's much more concentrated in aquatic environments.
By Ben Harder - Earth
Warmer climate, decreased rice yield
Agricultural data gathered over a dozen years at a Philippines rice paddy suggest that climate changes brought about by global warming could significantly diminish rice yields.
By Sid Perkins - Agriculture
A Maize-ing Travels
Corn, an American native, has taken root the world over and is becoming increasingly important to agriculture in nations beyond the West.
By Janet Raloff - Earth
Sky Lights
Devoted to atmospheric optics, this Web site offers beautifully illustrated explanations of spectacular phenomena ranging from rainbows to ice haloes. Created by physicist Les Cowley, it features amazing images, along with explanations of how the imaged effects were created by nature. The ice halo section offers downloadable software for simulating various types of halos. Go […]
By Science News - Earth
Sprawl’s aquatic pollution
A new study links the traffic associated with urban sprawl to an unexpectedly large rain of air pollutants entering local waters.
By Janet Raloff - Earth
New database describes all the marbles
Analyses of the isotope ratios of carbon and oxygen in hundreds of samples of Greek marble may help researchers identify the quarries that supplied the stone for some of Europe's most famous statues and architecture.
By Sid Perkins - Earth
Dead Heat
New studies suggest that adverse health effects related to global warming aren't just a theoretical concern for the distant future.
By Sid Perkins - Earth
Long dry spell
Falling reservoir levels in the western United States are just one symptom that the region is suffering through a drought that may be the worst to strike in the past 500 years.
By Sid Perkins - Earth
Cost of protecting the oceans
Operating an extensive global network of marine parks in which fishing and habitat-stressing activities are restricted would probably be more affordable for governments than continuing to subsidize struggling fisheries at current levels.
By Ben Harder