In this issue:
"The Quantum Multiverse": A surprising connection between cosmology and quantum mechanics could unveil the secrets of space and time.
"The Messy Truth about Weight Loss": Two decades of research confirm that weight loss is about burning more calories than you consume—but what you eat is more important than how much you exercise.
"Unlocking the Mystery of ALS": Newly discovered genetic mutations are providing clues about how this disorder relentlessly destroys motor neurons and robs people of their mobility. The findings may lead to drug therapies for a condition that has long defied treatment.
"Greenland's Vanished Vikings": They ruled the icy outpost for hundreds of years before their colonies collapsed. New findings are elucidating their puzzling decline.
©2017 Scientific American