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Migration, molt affect how birds change their colors
Nov 12, 2020 06:15In late summer and autumn, millions of birds fly above our heads, often at night, winging their way toward their wintering grounds. Before the journey, many birds molt their bright feathers, replacing them with a more subdued palette. Watching this molt led scientists to wonder how feather color changes relate to the migrations many birds undertake twice each year.
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Latest on pandemic: Countries move to impose new restrictions as cases surge
Oct 28, 2020 08:49The number of people who have been afflicted with COVID-19 has now passed 44 million around the world, and the number of related fatalities is almost 1.16 million, according to data compiled by Johns Hopkins University.
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A long, uneven and uncertain ascent
Oct 26, 2020 12:51Except for China, where output is expected to exceed 2019 levels this year, output in both advanced economies and emerging market and developing economies is projected to remain below 2019 levels even next year. Countries that rely more on contact-intensive services and oil exporters face weaker recoveries compared to manufacturing-led economies.
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Hamed Lak chosen the best 2020 ACL (West) goalkeeper
Oct 26, 2020 03:16Persepolis football team custodian Hamed Lak was chosen as the best AFC Champions League 2020 (West) goalkeeper.
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COVID-19, climate crisis are part of same battle
Oct 05, 2020 12:09From early on in the COVID-19 pandemic, a common refrain has been, “At least maybe now we will get serious about addressing climate change.” One can certainly see the logic behind this thinking. The terrible toll the pandemic has taken should remind us of the importance of three things that are also necessary to tackle global warming: Science, public policy, and international cooperation.
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Damage of single use plastic usage during pandemic ‘will last forever’
Oct 01, 2020 07:38Environment campaigners have said action is needed to limit the use of “unnecessary” single-use plastic during the pandemic. During lockdown many chains banned the use of reusable cups for safety reasons, while disposable face masks have been found dropped on beaches.
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Global coronavirus deaths pass 'agonizing milestone' of 1 million
Sep 29, 2020 09:01The global death toll from COVID-19 has risen past 1 million on Tuesday, according to a Reuters tally, a bleak milestone in a pandemic that has devastated the global economy, overloaded health systems and changed the way people live.
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Persepolis edges Al-Sadd to reach 2020 ACL quarters
Sep 28, 2020 03:31Persepolis football team from Iran defeated Qatari giant Al-Sadd 1-0 to book a place at the 2020 AFC Champions League quarter-finals.
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Might we find life on Venus?
Sep 25, 2020 06:07On September 17 a group of scientists using Earth-based telescopes announced that they had detected phosphine in the atmosphere of Venus. On Earth, phosphine is almost always produced by microbial activity. While geological processes are known that can, in principle, produce phosphine, the concentrations of the gas found on Venus, while small, were nevertheless much too high to be attributable to such sources. So how could the phosphine have gotten there? The simplest explanation is life.
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The tipping points at the heart of climate crisis
Sep 24, 2020 11:55We have known for years that many parts of the climate have so-called tipping points. That means a gentle push, like a slow and steady warming, can cause them to change in a big way that is wholly disproportionate to the trigger. If we hit one of these tipping points, we may not have any practical way to stop the unfolding consequences.