杏吧原创

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MFG740 Red-eyed tree frog (Agalychnis callidryas) Costa Rica.

Life

Red-eyed tree frogs prefer mates whose croak vibrations they can feel

Female red-eyed tree frogs respond better to mating calls they hear if they can also feel them through the branches they are perched on, a finding that may extend to other tree frog species

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In this mosaic image stretching 340 light-years across, Webb?s Near-Infrared Camera (NIRCam) displays the Tarantula Nebula star-forming region in a new light, including tens of thousands of never-before-seen young stars that were previously shrouded in cosmic dust. The most active region appears to sparkle with massive young stars, appearing pale blue. Scattered among them are still-embedded stars, appearing red, yet to emerge from the dusty cocoon of the nebula. NIRCam is able to detect these dust-enshrouded stars thanks to its unprecedented resolution at near-infrared wavelengths.

Space

JWST’s dazzling nebula image shows stars we have never seen before

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Health worker giving a vaccine

Health

Vaccinations and past infections reduce risk of spreading covid-19

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The Gobi desert in China

Environment

Hydrogen produced from air could provide low-carbon fuel in deserts

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A sleeping man and woman in bed

Health

Some doses of blue light from screens may not affect your sleep

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Cut trees and burned down forest in Brazil

Environment

The Amazon rainforest has already reached a crucial tipping point

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2009 Margaret Williams, PhD; Claressa Lucas, PhD;Tatiana Travis, BS Under a moderately-high magnification of 6500X, this colorized scanning electron micrograph (SEM) depicted a grouping of Gram-negative Legionella pneumophila bacteria. Please see PHIL 11092 through 11140 for additional SEMs of these organisms, specifically PHIL 11121 for a black and white version of this image. You?ll note that a number of these bacteria seem to display an elongated-rod morphology. L. pneumophila are known to most frequently exhibit this configuration when grown in broth, however, they can also elongate when plate-grown cells age, as it was in this case, especially when they?ve been refrigerated. The usual L. pneumophila morphology consists of stout, ?fat? bacilli, which is the case for the vast majority of the organisms depicted here. These bacteria originated on a 1 week-old culture plate (+/- 1 day), which had incubated a single colony, at 37?C upon a buffered charcoal yeast extract (BCYE) medium with no antibiotics.

Health

Legionnaires鈥� disease may be cause of mystery pneumonia in Argentina

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In some parts of the world artificial trans fats are added to products like pastries to extend their shelf life at a low cost, but they have been linked to heart disease

Health

Denmark’s ban of artificial trans fats saved 1200 lives over 16 years

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Wild feral cat on the banks of Cooper Creek, South Australia

Environment

Making Australia鈥檚 native animals poisonous could curb feral cats

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Close up hand use mobile app to control light in house.

Technology

Apps used as alternatives to prison in US found to have privacy flaws

An analysis of 16 apps used as alternatives to incarceration found numerous privacy problems including in an app used to track almost 248,000 immigrants

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Physics

Blasting plastic with powerful lasers turns it into tiny diamonds

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Environment

UK energy crisis sparks rush for firewood despite air pollution fears

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Space

JWST has spotted sandy clouds on a distant alien world

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Health

What we know about the mysterious pneumonia in Argentina

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