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Victoria pauses AstraZeneca COVID-19 vaccine rollout for those under 50
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Los datos espectrales podrían acelerar el hallazgo de vida extraterrestre • Tendencias21
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How spinifex grasses got their ring shapes
Scientists studying spinifex unearth the good and bad of soil microbes.
Spinifex ring (Triodia spp.) on the edge of the northern Simpson Desert, southwest Queensland, Australia. Credit: Auscape/Universal Images Group/Getty Images.
Scientists say they may have solved a longstanding mystery of how Australia’s iconic spinifex got its distinctive ring shape. It seems the grasses die off in the middle due to a build-up of pathogenic soil microbes.
“People generally think about the beneficial effects of soil microbes, which can help plants access water and nutrients,” says Angela Moles from the University of New South Wales, senior author of a paper published in the
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Past Warming Shows 2°C Brink May Be Close
Once again, past warming warns of the power of climate change. The surprise is that it doesn’t take much warming to raise sea levels six metres.
By Tim Radford
Even if the world’s nations keep their promise to contain global warming to within 2°C, past warming shows that the Earth will still change visibly – and perhaps sooner than science currently expects.
Apr 11, 2021
A year into working from my bedroom, I thought I had reached an emotional equilibrium where I could tolerate the multiple kid interruptions throughout my day. But last week, my older daughter was assigned a scavenger hunt in remote school. She barged through my door which I am sorry to report has no lock four times in one hour, looking for slippers, something red (twice) and a hairbrush. On the fourth interruption, I snapped. “You’ve got to get out of here,” I said, in a voice much harsher than I like to use with my children.
My daughter was upset, and I felt bad that I yelled. But I was also conflicted. Every time she came in, I had politely asked her to look elsewhere in the apartment because I had a deadline to meet. She’s a third-grader, which is old enough to understand and honor that request, and I want to raise her to be empathetic to other people’s needs.
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