In the Dec. 9 SN: Lessons from the Pliocene, searching for new ways to fight MS, a supernova on repeat, the great gene drive debate, spider sleep secrets, an ailing boy gets new skin, kleptopredation and more.
BABY PICS Scientists are keeping an eye on the rates of erosion of volcanic ash on Earth’s newest island, called Hunga Tonga-Hunga Ha’apai.
Cecile Sabau, Damien Grouille, NASA
BLOCKING THE SUN Saturn’s rings cast a shadow on the gas giant’s charged upper atmosphere, blocking ionizing rays as well as visible light.
JPL-Caltech/NASA, Space Science Institute
NORTHERN LAKES Radar images of Titan’s poles show lakes that may form like Earth’s sinkholes. A new topographic map suggests these hydrocarbon lakes may be connected through Titan’s equivalent of groundwater.
New telescopes and spacecraft will soon help researchers scour our galaxy for signs of extraterrestrial life. But what might aliens look like? And if they do exist, why haven’t they returned our calls? These are just some of the questions addressed in the Science News special report “In Search of Aliens” (SN: 4/30/16, p. 24).