Global Warming Could Disrupt GPS Satellites, Study Says

(Source: National Geographic) A buildup of carbon dioxide in Earth's atmosphere could require changes in the way satellites are launched and might impact the function of global positioning systems (GPS), an international team of atmospheric scientists suggests. Networks of orbiting GPS satellites send signals back to Earth that allow everything from jetfighters to cell phones to pinpoint their exact locations.

Global Warming Already Causing Extinctions, Scientists Say

(Source: National Geographic) No matter where they look, scientists are finding that global warming is already killing species—and at a much faster rate than had originally been predicted.
"What surprises me most is that it has happened so soon," said biologist Camille Parmesan of the University of Texas, Austin, lead author of a new study of global warming's effects.Parmesan and most other scientists hadn't expected to see species extinctions from global warming until 2020.

"Alchemy" used to create great violins

(Source: National Geographic) A fascinating snippet on how tests have revealed how Antonio Stradivari made some of the great violins.

National Geographic video: Time Running Out to Save Seafood

(Source: National Geographic) A thought-provoking video clip - preceded by an ad ! - someone has to pay the bills - about over-fishing of the oceans.