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Mar 3, 2021

Astronauts Explore Caves on Earth, Learning the Skills They’ll Need for the Moon and Mars

Posted by in categories: habitats, space

A unique training program has teams of astronauts spending time inside caves doing experiments and learning to work together in a challenging environment.


We’re accustomed to astronauts pulling off their missions without a hitch. They head up to the International Space Station for months at a time and do what they do, then come home. But upcoming missions to the surface of the Moon, and maybe Mars, present a whole new set of challenges.

One way astronauts are preparing for those challenges is by exploring the extreme environment inside caves.

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Mar 3, 2021

Debunking myths about renewable energy

Posted by in categories: economics, energy, sustainability

Critics of renewable energy often cite two reasons for why they think a transition from fossil fuels will take half a century. Firstly, that sources of renewable energy are too intermittent to be reliable and secondly, that governments cannot bear the costs of switching entire economies to clean energy.

Mar 3, 2021

Nanoparticle cuts cholesterol

Posted by in categories: biotech/medical, nanotechnology

Scientists have used lipid nanoparticles to deliver CRISPR genome editing into the livers of mice, resulting in a 57% reduction of cholesterol levels.

Mar 3, 2021

A Cephalopod Has Passed a Cognitive Test Designed For Human Children

Posted by in category: neuroscience

A new test of cephalopod smarts has reinforced how important it is for us humans to not underestimate animal intelligence.

Mar 3, 2021

Second Order Optical Merons, or Light Pretending to Be a Ferromagnet

Posted by in category: physics

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Scientists have demonstrated how to structure light such that its polarization behaves like a collective of spins in a ferromagnet forming half-skyrmions (also known as merons). To achieve this, the light was trapped in a thin liquid crystal layer between two nearly perfect mirrors. Skyrmions, in general, are found, e.g., as elementary excitations of magnetization in a two-dimensional ferromagnet but do not naturally appear in electromagnetic (light) fields.

One of the key concepts in physics, and science overall, is the notion of a “field” that can describe the spatial distribution of a physical quantity. For instance, a weather map shows the distributions of temperature and pressure (these are known as scalar fields), as well as the wind speed and direction (known as a vector field). Almost everyone wears a vector field on their head — every hair has an origin and an end, just like a vector. Over 100 years ago L.E.J. Brouwer proved the hairy ball theorem which states that you can’t comb a hairy ball flat without creating whorls, whirls (vortices), or cowlicks.

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Mar 3, 2021

If You Transplant a Human Head, Does Its Consciousness Follow?

Posted by in categories: biotech/medical, neuroscience

In her new book, Brandy Schillace recalls the unbelievable legacy of a Cold War era neurosurgeon’s mission to preserve the soul.

Mar 3, 2021

A warp drive that doesn’t break the laws of physics is possible

Posted by in categories: physics, space travel

Previous ideas about how to make these hypothetical devices have required exotic forms of matter and energy that may not exist, but a new idea for a warp drive that doesn’t break the laws of physics may be theoretically possible. However, it may not be practical in the foreseeable future because it requires ultra dense materials.

Mar 3, 2021

Dozens of Genes That Block Regeneration of Neurons

Posted by in category: neuroscience

Summary: Study identifies 40 genes in mice that actively suppress axon regeneration in the central nervous system.

Source: Yale

Mar 3, 2021

LIVE: Starship SN10 Flight Test

Posted by in category: space travel

SN10 Flight Test LIVE STREAM


SpaceX is set to launch the Starship SN10 prototype to an altitude of approximately 10 kilometers. A launch attempt is possible between 9 am and 6 pm Central time on Wednesday. However, as with testing, there is always a chance that teams could decide to stand down and try again on a different day.

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Mar 3, 2021

New deepfake tool reanimates the dead

Posted by in category: futurism

Israeli genealogy company MyHeritage has released a groundbreaking new feature to animate faces in still photos.