22/11/2021

GeSnOI mid-infrared laser technology

Direct band gap GeSn alloys have emerged as a promising group-IV gain material for low-cost infrared laser manufacturing. They face major issues like high threshold power, and low lasing temperature that hinder their integration ...

KPD 0005+5106: Roasted and shredded by a stellar sidekick

An exhausted star still has some punches to deliver. Astronomers have found that a white dwarf is pummeling a companion object—either a lightweight star or a planet—with incessant blasts of heat and radiation plus a relentless ...

How smart is an octopus?

The unique brainpower of octopuses—known for their intelligence and Houdini-like escapes—has been revealed by University of Queensland researchers.

Healthier UK diets linked to lower greenhouse gas emissions

A new analysis adds to evidence that nutritious diets are often more environmentally sustainable, while also demonstrating the feasibility of evaluating diet sustainability at the scale of specific foods—rather than broader ...

New theory connects tree uprooting and sediment movement

The critical zone is Earth's outer skin, the space between treetops and bedrock. The critical zone is a community comprising rock, water, soil, air, and the flora and fauna that live on Earth's surface. As floods, landslides, ...

Delay laws on firearms purchases save lives

Legislation that enforces a 'cooling off' period between purchasing and acquiring a firearm reduces impulse purchases. It also limits the number of homicides, especially in the domestic sphere. This is demonstrated by behavioral ...

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