Recent observational surveys have shown significant oceanic bottom-water warming. However, the mechanisms causing such warming remain poorly understood, and their time scales are uncertain. Here, we report computer simulations that reveal a fast teleconnection between changes in the surface air-sea heat flux off the Ad
After a lengthy scientific review, the United States last week decided to ban the use of endosulfan, an inexpensive organochlorine pesticide that builds up in the environment. The U.S. Environmental Protection Agency ruled that the compound
Humans continue to transform the global nitrogen cycle at a record pace, reflecting an increased combustion of fossil fuels, growing demand for nitrogen in agriculture and industry, and pervasive inefficiencies in its use. Much anthropogenic nitrogen is lost to air, water, and land to cause a cascade of environmental and human health problems.
Long-term ecological effects of transgenic Bacillus thuringiensis (Bt) crops on non-target pests have received limited attention, more so in diverse smallholder-based cropping systems of the developing world.
Nobel Laureate Richard Feynman believed that creative pursuit in science requires irreverence. Sadly, this spirit is missing from Indian science today. As other nations pursue more innovative approaches to solving problems, India must free itself from a traditional attitude that condemns irreverence, so that it too can address local and global challenges and nurture future leaders in science.
In 2002, world leaders committed through the Convention on Biological Diversity (CBD) to achieve a significant reduction in the rate of biodiversity loss by 2010. The researchers compiled 31 indicators to report on progress toward this target. Most indicators of the state of biodiversity (covering species
As Egypt celebrates the 50th anniversary of the start of the construction of the Aswan High Dam, some scientists say that this wonder of engineering is contributing to an environmental catastrophe that could force millions of its citizens to abandon the lush, fertile delta. The worst of these is coastal erosion and subsidence, the compacting of the delta soil.
