Because of heavy logging in the 1800s and early 1900s, only about five percent of the old-growth redwoods remain, with much of that acreage in state and national parks. Now they face another threat: poachers.
Having solved a 42-year-old mystery about lunar "streamers," the $280 million LADEE spacecraft is set to vaporize when it collides with the moon around April 21st.
The NASA spacecraft is designed to answer a 42-year-old mystery about lunar dust, but it's also snapping photos along the way.
U.S. could make substantial reductions in greenhouse gas emissions by stopping methane leaks from natural gas pipelines, says a new Stanford study.
Three youth-focused clothing chains, including San Francisco-based retailer Charlotte Russe, sell products with illegal levels of lead, according to an Oakland-based nonprofit group.
Every 11 years, the magnetic field of the sun changes its polarity (in fact, this may already be happening) sending a ripple of changing current out way past Pluto, to the outer reaches of the heliosphere. This solar "flip" is happening now.