Making gold green: New non-toxic method for mining gold

Northwestern University scientists have struck gold in the laboratory. They have discovered an inexpensive and environmentally benign method that uses simple cornstarch—instead of cyanide—to isolate gold from raw materials ...

Behind the scenes of recovering NASA's Hubble

In the early morning of October 27, the Hubble Space Telescope targeted a field of galaxies not far from the Great Square in the constellation Pegasus. Contained in the field were star-forming galaxies up to 11 billion light-years ...

China says air pollution worsening

China's air pollution increased this year for the first time since 2005, the environmental protection ministry has said, due to sandstorms, a rise in construction and industrial projects, and more cars.

Anti-clumping strategy for nanoparticles

Nanoparticles are ubiquitous in industrial applications ranging from drug delivery and biomedical diagnostics to developing hydrophobic surfaces, lubricant additives and enhanced oil recovery solutions in petroleum fields. ...

What Earth's gravity reveals about climate change

On March 17, 2002, the German-U.S. satellite duo GRACE (Gravity Recovery and Climate Experiment) was launched to map the global gravitational field with unprecedented precision. The mission lasted 15 years, more than three ...

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