EARTH IN ACTION Alexandra Witze ponders Earth’s odds in “When an asteroid heads for Earth, it’s time to reconsider those doomsday plans.”
MOLECULES Nanoparticles (below, blue) detect viruses (pink) in “Synthetic nanomaterial can recognize viruses.”
HEALTH & ILLNESSAllergic people became able to tolerate up to a full glass of milk. See “Therapy for milk allergy...
April 5 – 6 Texas A&M University hosts a physics and engineering festival. See a bubble show or meet an astronaut and two Nobel laureates. More at bit.ly/SFtamu2013
April 22 Deadline for entries to the Society of Vertebrate Paleontology illustration awards, honoring the best in art depicting dinosaurs and other ancient life. See bit.ly/SFpaleo2013
The surface of the moon may be covered with deep layers of fluffy material into which landing vehicles could sink out of sight…. Research so far has shown that loose particles hit by meteoroids settle down into the moon’s rock or mineral surface. This surface becomes exposed to radiation and breaks down into fine particles of dust. The dust coagulates into larger and larger clumps…. Observed...
Picture sitting at a baseball park, leisurely watching a game. Your mind wanders, torn between a box of Cracker Jack and the conversation drifting down from the row behind you. Suddenly the crack of a bat snaps you to attention, and you scan the field for the ball. Physicist Alan Nathan would say your attention is piqued because well-hit balls make a different noise than weak pop-ups do....
Letters to the Editor
Grand Canyon rising If the geology of the Grand Canyon dates back to 70 million years ago “Grand Canyon’s age pushed back,” (SN: 1/12/13, p. 15), that would be around the same time the Rocky Mountains were being pushed up by the subduction process originating off the western continental coast. Could the lifting of the Colorado Plateau be related to the lifting of the Colorado Rockies?Joe...