Astronaut Mark Watney is stranded alone on Mars. His situation is grim. His supplies- he’ll suffocate or starve long before the next manned mission. Communication- all systems down and no one knows he’s alive. 239 more words
Estimates of the incremental emission effects of individual oil sands projects like the Keystone XL (KXL) pipeline are sensitive to assumptions about the response of world markets and alternative transportation options.