Lost in the Dark
The universe seems to be expanding too quickly, according to clashing measurements. Now, two studies find that the source of the conflict may lie in the past, possibly in a form of dark energy that no longer exists, Davide Castelvecchi reports for Nature. Early dark energy" is just one way to speed up the universe's expansion. Thomas Lewton reported on it, along with decaying dark matter and other proposals, for Quanta last year.
Coral, a Climate Canary
Half of the ocean's corals have died since 1950, Corryn Wetzel reports for Smithsonian Magazine, causing the ecosystems' biodiversity to plunge by nearly two-thirds. Corals' climate sensitivity lets researchers use the marine relics to understand past oceans and to predict their future, Elizabeth Svoboda reported for Quanta in 2018. | |
