In the July 7 SN: The impact hypothesis that won’t die, CAR-T cell therapy upgrades, bad news for Antarctica, a quoll conundrum, honeybees know zero, how volcanoes kill, Jupiter’s polar lightning and more.
BAD BURN Wildfires such as this one, which burned almost 50,000 acres in Oregon and Washington in 2017, are one reason why the days with the worst air quality are becoming even worse in the northwestern United States.
Brian Tai/U.S. Forest Service (Public Domain Mark 1.0)
WILD WASTE Nitrogen from the guano of seabirds, such as this red-footed booby chick, leaches into coral ecosystems and helps them stay robust.
N. Graham
MONARCH BEWARE As the climate changes, lovely tropical milkweed popular in gardens may become even more of a danger to monarch butterflies than it is now.
Warren Price Photography/Shutterstock
