NASA, FEMA, international partners plan asteroid impact exercise

NASA and other U.S. agencies and space science institutions, along with international partners, will participate in a 'tabletop exercise' that will play out a realistic -- but fictional -- scenario for an asteroid on an impact trajectory with Earth.

Modern analysis of ancient hearths reveals Neanderthal settlement patterns

Ancient fire remains provide evidence of Neanderthal group mobility and settlement patterns and indicate specific occupation episodes, according to a new study.

What the vibrant pigments of bird feathers can teach us about how evolution works

Biologists show that evolution is driven by dependency on other species within ecological communities - testing a long-held idea of the late, great George Gaylord Simpson.

43-year-old mystery of Polynya in Antarctica unraveled

A new study has unraveled the four decade long mystery surrounding the occurrence of a mid-sea Polynya -- a body of unfrozen ocean that appeared within a thick body of ice during Antarctica's winter almost two years ago.

Carbon dioxide from Silicon Valley affects the chemistry of Monterey Bay

Elevated concentrations of carbon dioxide in air flowing out to sea from Silicon Valley and the Salinas Valley could increase the amount of carbon dioxide dissolving in Monterey Bay waters by about 20 percent.

Researchers see health effects across generations from popular weed killer

Researchers have found a variety of diseases and other health problems in the second- and third-generation offspring of rats exposed to glyphosate, the world's most popular weed killer. In the first study of its kind, the researchers saw descendants of exposed rats developing prostate, kidney and ovarian diseases, obesity and birth abnormalities.

Scratching the skin primes the gut for allergic reactions to food, mouse study suggests

Scratching the skin triggers a series of immune responses culminating in an increased number of activated mast cells -- immune cells involved in allergic reactions -- in the small intestine, according to research conducted in mice. This newly identified skin-gut communication helps illuminate the relationship between food allergy and atopic dermatitis (a type of eczema), a disease characterized by dry, itchy skin.

Defying the laws of physics? Engineers demonstrate bubbles of sand

A recent discovery explains a new family of gravitational instabilities in granular particles of different densities that are driven by a gas-channeling mechanism not seen in fluids. The team observed an unexpected Rayleigh-Taylor (R-T)-like instability in which lighter grains rise through heavier grains in the form of 'fingers' and ''granular bubbles, similar to the bubbles that form and rise in lava lamps.

New genomics tool ECCITE-seq expands multimodal single cell analysis

ECCITE-seq (Expanded CRISPR-compatible Cellular Indexing of Transcriptomes and Epitopes by sequencing) allows researchers to perform high-throughput measurements of multiple modalities of information from single cells. The technique profiles different types of biomolecules from thousands of single cells in parallel, offering a breadth of information that can be used as readout in CRISPR-based pooled genetics screens.

Climate change has worsened global economic inequality

The gap between the economic output of the world's richest and poorest countries is 25 percent larger today than it would have been without global warming, according to new research.

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UK warns against all but essential Sri Lanka travel

The UK advises against all but essential travel to Sri Lanka, where the bombings death toll is revised down by about 100.

Huawei row: ‘Inquiry to be held’ into National Security Council leak

A formal inquiry will be held into leak from National Security Council meeting, the BBC is told.

Macron announces ‘fairer, more humane’ reforms in response to yellow vests

France's president responds to five months of weekly protests against economic inequality.