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The HFC challenge: Can the Montreal Protocol continue its winning streak?

The HFC challenge: Can the Montreal Protocol continue its winning streak? by Jane Palmer on 5 May 2021 Since the Montreal Protocol was signed in 1987, countries have phased out most of the ozone-damaging gases, but their replacements, the HFCs, are powerful greenhouse gases that contribute to climate change. In 2016, national delegates agreed on the Kigali Amendment to the Montreal Protocol, which calls for cutting the production and use of HFCs by 80–85% by the late 2040s. The amendment entered into force at the start of 2019, with the goal of avoiding additional warming by up to 0.4°C (0.72 °F) by the end of the century.

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Many animals play dead—and just not to avoid getting eaten

Many animals play dead and not just to avoid getting eaten Christine Peterson © Photograph by Blickwinkel, Alamy dice snake (Natrix tessellata), playing possum next to a creek, Greece, Creta Of all the ways animals have evolved to evade predators, feigning death might be one of the most creative and risky. Scientifically known as thanatosis, or tonic immobility, playing dead occurs across the animal kingdom, from birds to mammals to fish. Perhaps the most famous death faker is North America’s Virginia opossum, which opens its mouth, sticks out its tongue, empties its bowels, and excretes foul-smelling fluids to convince a predator it’s past the expiration date.

United kingdomUnited statesCharles darwinTrine bildeRosalind humphreysUniversity of stGuk university of bristolAarhus universityNorth americaAna sendova franksCentral americanஒன்றுபட்டது கிஂக்டம்ஒன்றுபட்டது மாநிலங்களில்சார்லஸ் டார்வின்பல்கலைக்கழகம் ஆஃப் ஸ்டம்ப்இங்கிலாந்து பல்கலைக்கழகம் ஆஃப் பிரிஸ்டல்

Many animals play dead—and not just to avoid getting eaten

Snakes, invertebrates, birds, and more have evolved several reasons for feigning death.

United kingdomUnited statesCharles darwinTrine bildeRosalind humphreysUniversity of stGuk university of bristolAarhus universityNorth americaAna sendova franksCentral americanஒன்றுபட்டது கிஂக்டம்ஒன்றுபட்டது மாநிலங்களில்சார்லஸ் டார்வின்பல்கலைக்கழகம் ஆஃப் ஸ்டம்ப்இங்கிலாந்து பல்கலைக்கழகம் ஆஃப் பிரிஸ்டல்

Scientists Digitally Rebuilt Dinosaur s Brain, Made Some Surprising Discoveries

Scientists Digitally Rebuilt Dinosaur s Brain, Made Some Surprising Discoveries
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United statesBristol antonio ballellGuk university of bristolAntonio ballellஒன்றுபட்டது மாநிலங்களில்இங்கிலாந்து பல்கலைக்கழகம் ஆஃப் பிரிஸ்டல்