Science The clouds above us teem with strange creatures Allan Rose Hill

Space An asteroid will come close to hitting the Earth the day before Election Day Thom Dunn

Environment Yes, flights are getting more turbulent thanks to climate change Andrea James

video Weather phenomenon of light pillars vs. northern lights Andrea James

Weird Incredibly strange spherical cloud spotted in Japan David Pescovitz

aurora Lawnmower triggers false Northern Lights alert David Pescovitz

Science Rare red sprites dancing in the skies, above thunderstorms Andrea James

Science Rising CO2 may already be showing up in human blood — a "potentially toxic atmosphere in 50 years" Ellsworth Toohey

Science In the year 536, the sun dimmed for 18 months: "one of the worst periods to be alive" Ellsworth Toohey

Space Scientists working to uncover space-based nuclear weapons Séamus Bellamy

Science A volcano froze crops worldwide in 1453 Ellsworth Toohey

Science Nature's Mars simulator scores your terraforming skills Gail Sherman

Science NASA's robot rescue of the Swift space telescope launches June 30 Gail Sherman

Science Blood-red rain fell on India for two months and some physicists blamed a comet Ellsworth Toohey

art Toyo Ito's Expo Hall "Shining Hat" looks like a portal opening in the sky Popkin

Japan What happened to the 2.5 mile high building designed to be taller than Mount Fuji? Ellsworth Toohey

Space Astronauts may soon finally be able to do laundry Gail Sherman

What Grandpa Pudding Brains says war is fine because number 69 Jason Weisberger

weather Mysterious New England boom was meteor Rob Beschizza