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24 分钟
Are ‘heavy metals’ dangerous? Yes, but not everything you’ve heard is true.
The first thing to know is that “heavy metal” is something of a misnomer. Scientists disagree about how to define the term and its utility. In theory, a heavy metal should be a metallic element that ...
Opinion
Chemistry World
46 分钟
Opinion
How long are medicines good for?
United States law requires pharmaceutical companies to determine the appropriate length of time that a drug will meet ...
4 小时
on MSN
'Never give up': A Tennessee janitor went from living in his car to driving a $3 million ...
Poori arrived in the U.S. as an Iranian refugee in the late 1990s, supported by a church that helped him secure a janitor job ...
15 小时
3 Electricity Grid Plays for Your Portfolio
Quanta Services is a Houston, Texas-based engineering and construction contractor that’s benefiting from the need to upgrade ...
18 小时
Oregon cities vote to ban psilocybin, rejecting statewide legalization for therapeutic use
Drug reform advocates hailed Oregon as a progressive leader when it became the first in the nation to legalize the ...
21 小时
on MSN
How Side Hustles Are Redefining Careers and Shaping the Future of Work
Here's how more than 4 million Americans have transformed side hustles into independent careers, earning over $100,000.
1 天
3 Simple Rules to Beat the Downsides of Aging
While we wait for scientists to come up with a miracle pill, we can take matters into our own hands with easy steps to ensure ...
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