First UK cycle share scheme to launch next week.

Japanese "solar sail" propelled by the sun.

Economic recession blamed for decline.

Company officials are cautiously optimistic after three days of encouraging test results.

Report finds dramatic reductions in prohibited logging activities around the globe.

US natural gas driller to disclose chemical use.

26-hour flight confirms viability of emissions-free air travel.

L.A. artist creates sublime monuments from discarded materials.

The New York Times reports.

Country moves to make natural-gas fired plants the new clean-power standard.