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Some dinosaurs were really huge. And now we may have a better way to estimate just how heavy these giants were. Researchers have developed a method to weigh dinosaurs, based on laser scans of their skeletons.

Tyler Keillor (pronounced “KEEL-er”) is a soft-spoken, understated paleoartist whose work is anything but. He works at the University of Chicago as a paleoartist, reconstructing creatures that paleontologist Paul Sereno excavates on his expeditions around the world. When I met Tyler eleven years ago, he was working in a cavernous, three-story high cinderblock warehouse, with no heat and no ventilation (Sereno has since turned the space into a world-class dinosaur prep lab)

The creation of cement is an incredibly polluting process, but Stanford scientist Bret Constanz has found a way to mimic the way coral works, by creating cement from CO2 and water.