Earth

Microbes

Bacteria in flowers may boost honeybees’ healthy gut microbes

Honeybees may deliver doses of probiotics to the hive to help feed baby bees’ microbiome.

Earth

Nepal quake’s biggest shakes relatively spread out

The seismic rumblings of the April 25 Nepal earthquake were mostly in low frequencies that are more likely to collapse large structures, new research suggests.

Oceans

Ocean current simulations could narrow Flight 370 search

Aircraft debris found on Réunion Island in the western Indian Ocean could originate from the northern half of Malaysia Airlines Flight 370’s search area, ocean simulations show.

Environment

Dust components may promote obesity

Fat dust bunnies may contain obesity-boosting chemicals.

Climate

Iceless Arctic summers now expected by 2050s

The Arctic Ocean will have its first ice-free summer in the 2050s, nine years earlier than previously forecast, according to improved simulations.

Climate

Desert dig uncovers caches of missing CO₂

Irrigation water may wash significant amounts of carbon into groundwater systems beneath Earth’s deserts, researchers propose.

Neuroscience

Global warming unpaused, how space affects the brain and more reader feedback

A reader shares a story about Stephen Jay Gould, while others discuss how to protect the brain from radiation in space and whether 2014 was the hottest year on record.

Ecosystems

Encased algae create kaleidoscope of color

The skeletons of diatoms, algae that produce oxygen but also form toxic blooms, can create beautiful microscopic designs.

Paleontology

Sudden heat spikes did in Ice Age’s mammoth mammals

Abrupt warming and excessive hunting by ancient humans were responsible for the disappearance of many large mammals, including woolly mammoths, during Earth’s last glacial period.

Environment

Fracking doesn’t always go to great depths

Fracking at shallow depths is unexpectedly common in the United States and raises new concern for drinking water contamination.

Animals

Sea level rise threatens sea turtles

Sea level rise is causing coastal areas to be inundated with water. Even short periods of being wet can kill sea turtle eggs, a new study finds.

Animals

Eyewitness account of a dolphin birth takes a dark turn

Scientists witnessed the first wild birth of a bottlenose dolphin — and an attempt at infanticide.