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Ecology Jun 14, 2024

Sharks have depleted functional diversity compared to the last 66 million years, study finds

New research by Swansea University and the University of Zurich has found that sharks retained high levels of functional diversity for most of the last 66 million years, before steadily declining over the last 10 million ...

Planetary Sciences Jun 14, 2024

Quebec lake meteorite impact yields rare rocks and evidence of extreme heat

For more than a decade, Western University planetary geologist Gordon "Oz" Osinski has led expeditions to Kamestastin Lake in Labrador. The environment is a perfect training ground because the properties and rock formations—created ...

Biotechnology Jun 14, 2024

Novel insights into fluorescent 'dark states' illuminate ways forward for improved imaging

Scientists at St. Jude Children's Research Hospital have reported a way to improve molecular scale distance measurements using single-molecule fluorescence resonance energy transfer (smFRET). smFRET quantifies the excitation ...

Planetary Sciences Jun 14, 2024

NASA is considering other ways of getting its Mars samples home

In 2021, NASA's Perseverance rover landed in the Jezero Crater on Mars. For the next three years, this astrobiology mission collected soil and rock samples from the crater floor for eventual return to Earth. The analysis ...

Astronomy Jun 14, 2024

High-speed baby stars circle the supermassive black hole Sgr A* like a swarm of bees

Observational astronomy shows that newly discovered young stellar objects (YSOs) in the immediate vicinity of the supermassive black hole Sagittarius A* located in the center of our galaxy behave differently than expected. ...

Nanomaterials Jun 14, 2024

New method links graphene nanolayers for tougher, elastic films

Layers of carbon atoms in a honeycomb array are a true supermaterial: their unusually high conductivity and favorable mechanical properties could further the development of bendable electronics, new batteries, and innovative ...

Planetary Sciences Jun 14, 2024

Astronomers discover an Earth-sized exoplanet orbiting a nearby ultracool dwarf star

An international team of astronomers reports the discovery of a new Earth-sized exoplanet that orbits an ultracool dwarf star located just 54.6 light years away. The newfound alien world, designated SPECULOOS-3 b, is slightly ...

Environment Jun 14, 2024

Sea swamps Bangladesh at one of world's fastest rates

After cyclone gales tore down his home in 2007, Bangladeshi fisherman Abdul Aziz packed up what was left of his belongings and moved about half a kilometer inland, further away from storm surge waves.

Astronomy Jun 14, 2024

High-precision measurements challenge our understanding of Cepheids

"Classical Cepheids" are a type of pulsating star that rhythmically brighten and dim over time. These pulsations help astronomers measure vast distances across space, which makes Cepheids crucial "standard candles" that help ...

Space Exploration Jun 13, 2024

NASA cancels spacewalk at ISS over 'spacesuit discomfort issue'

A spacewalk scheduled for two astronauts outside the International Space Station was canceled by NASA about an hour before it was to begin Thursday morning.

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