Trump asked for fewer Covid-19 tests. Now the CDC is recommending less testing.

A couple of months ago, President Donald Trump said he told federal officials to “slow the testing down, please.” Now the Trump administration is taking a step that would, in effect, slow down testing. On Monday, the Centers for Disease Control and Prevention (CDC) updated its testing guidelines to no longer recommend people get tested…

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Hurricane Laura was already a deadly storm before it reached the US

Before Hurricane Laura made landfall in the United States, it had already proved to be a deadly storm in three Caribbean countries, bringing torrential downpours, flooding, power outages, and other damage that killed over 20 people and has made life dangerous for millions more. As a tropical storm, Laura pummeled the Dominican Republic last weekend…

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Rapid $1 Covid-19 tests exist. Why can’t we get them?

To get the US pandemic under control, a growing number of health and medical experts are making a clarion call for an additional testing approach to Covid-19. What we need, they argue, are at-home rapid tests that look for antigens, proteins the live virus makes. These kits would allow anyone to test themselves for the…

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How Trump let Covid-19 win

As America, and even his own administration, woke up to the threat of Covid-19, President Donald Trump still didn’t seem to get it. Within weeks of suggesting that people social distance in mid-March, the president went on national TV to argue that the US could reopen by Easter Sunday in April. “You’ll have packed churches…

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Trump’s EPA balks at a chance to save black lives

Decades of research paint a clear picture: The No. 1 environmental health risk in the US is soot. Also known as particulate pollution, it is made up of extremely small particles spewed into the air by power generation, industrial processes, and cars and trucks. There are “coarse particles,” between 2.5 and 10 micrometers in diameter,…

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Why a second round of Covid-19 lockdowns might not be as effective

Several states are now seeing a surge in new Covid-19 coronavirus infections and hospitalizations. And the states with more alarming outbreaks — Arizona, North Carolina, South Carolina, Texas, Utah, Arkansas, Florida, and Tennessee — generally saw few cases early in the pandemic. Many of these states have started to relax the restrictions on movement, businesses,…

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6 feet away isn’t enough. Covid-19 risk involves other dimensions, too.

When states had strict stay-at-home orders and lockdowns in place, many decisions about the risk of getting the coronavirus were simple. People didn’t have to think about whether dining in a restaurant is safe if the restaurant was closed. Now, that states are opening up — with varying degrees of precautions and adherence in place…

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A living rain: How one planetary scientist imagines life on Venus

The search for life in our solar system got a lot more exciting this week. On Monday, a team of scientists announced its members had detected phosphine gas in the caustic, hot atmosphere of Venus. So what? The gas — which you’d recognize by its fishy odor — is thought to be a byproduct of…

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