@sciam
www.scientificamerican.com The coin-flipping trick that counts the Internet Here’s how the ubiquitous HyperLogLog algorithm works 
www.scientificamerican.com Bursts of ‘pink noise’ during sleep could help your brain clean itself Triggering a flow of the brain’s cleaning fluid could lead to better sleep—and may decrease harmful waste particles 
www.scientificamerican.com Why measles is spreading again, how hackers are targeting freezers, and whether cats fart One story asks whether cats fart. The others are a lot less funny 
www.scientificamerican.com Acorns—not deer—can predict a rise in Lyme-spreading ticks Despite deer’s essential role in tick reproduction, looking to acorn numbers instead can forecast Lyme disease booms almost two years in advance 
www.scientificamerican.com NASA reveals new lunar rover, PROMISE, to launch to moon in 2028 At a press event on Saturday, the agency’s officials stressed that rovers and other infrastructure will be critical to ensuring human survival on the moon 