Science In 1986, a Cameroonian lake released a CO2 cloud that killed 1,746 people overnight Ellsworth Toohey

History Estonian supermarket built around a 10,000-year-old Ice Age boulder Popkin

Science These 1996 Hawaii lava photos look like a horror movie set Popkin

Science Vivianite may be the most goth crystal on Earth with its eerie glow and graveyard origins Popkin

Science H.P. Lovecraft borrowed from this real Connecticut seismic phenomenon Ellsworth Toohey

Science Magnified Sand reveals the hidden beauty of individual grains Popkin

History Workers routed a highway through this boulder rather than blast it Popkin

Science What is this weird huge mound in Siberia? Ellsworth Toohey

History Clermont-Ferrand's cathedral is built entirely from black lava stone Popkin

Science The Moon is shrinking and getting wrinkles Ellsworth Toohey

Science Soda can tabs and 1934 penny found inside newly formed beach rocks Gail Sherman

climate change Survey finds big cities slowly sinking into ground Rob Beschizza

geology Scotland as seen from the International Space Station Rob Beschizza

Science Likelihood of Alaska's Mount Spurr volcano erupting increases Jason Weisberger

books "Weird Ireland" offers a wonderfully whimsical tour of the Emerald Isle Thom Dunn

geology Man browsing Google Maps may have made big scientific discovery Allan Rose Hill

geology Mercury may have 11-mile deep layer of diamonds Rob Beschizza

geology Ever wondered how a sinkhole works? This video explains it Popkin

geology Mexico City Metro threatened by subsidence Carolyn Townsend

Science Mysterious glass found in desert may be from space David Pescovitz