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.
WILD WASTE Nitrogen from the guano of seabirds, such as this red-footed booby chick, leaches into coral ecosystems and helps them stay robust.
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
HAZY DAYS Long-term exposure to air pollution, seen here blanketing the Pakistani city of Lahore in June 2018, contributes to chronic health problems. New research suggests it triggers millions of new diabetes cases each year.