Philip Morris has ended a controversial 8-year-old program that supported research at dozens of U.S. universities. The tobacco company's decision removes a major factor behind a recent decision by the University of California (UC) to monitor the flow of such support into the 10-campus system.

Observations have shown that the hydrological cycle of the western United States changed significantly over the last half of the 20th century. We present a regional, multivariable climate change detection and attribution study, using a high-resolution hydrologic model forced by global climate models, focusing on the changes that have already affected this primarily arid region with a large and growing population.

The report by K.Van Oost et al., "The impact of agricultural soil erosion on the global carbon cycle" (26 October 2007, p. 626) raises two serious concerns. First, the eroded soil is severely depleted of its soil organic matter (SOM) pool, which is preferentially removed by surface runoff because it has low density and is concentrated in the surface layer. Second, the process of soil erosion by water entails three distinct stages : (i) detachment, (ii) transport/redistribution, and (iii) deposition. (Letters)

One million tons of atmospheric carbon dioxide are dissolved into the oceans every hour, a process that helps maintain the Earth's delicate carbon balance. But CO2 also makes seawater more acidic, and too much of it can wreak havoc on a marine species.

The use of new sampling techniques has cut by half the estimated number of wild tigers in India. A new report from the Indian government puts the number at 1411, compared with 3642 in 2002. Experts say the decline reflects more than just a change in methodology: Poaching, human encroachment and habitat loss take a heavy toll.

Lawmakers are again asserting that the Bush Administration is meddling in science. House Science Committee Democrats charge that federal officials have suppressed a report on potential health threats from pollution in the Great Lakes. They also say officials at the U.S. Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, may have punished a career federal scientist who oversaw it. CDC says the report had genuine scientific flaws.

The management and conservation of the world's oceans require synthesis of spatial data on the distribution and intensity of human activities and the overlap of their impacts on marine ecosystems.

A high-throughput protocol was developed for the synthesis of zeolitic imidazolate frameworks (ZIFs). Twenty-five different ZIF crystals were synthesized from only 9600 microreactions of either zinc(II)/cobalt(II) and imidazolate/imidazoloate-type linkers.

Porous solids have become a rich playground for chemists, who can tailor the materials' makeup for use in gas storage, filtering and catalysis.