It's hard to know how to take a lot of science stories in the news, @norbu. The journalists often are not scientists and they need sensational headlines to hook readers. A key tipoff for me is that no single study will debunk a whole body of evidence from many, many studies. Scientists, by their nature, are looking at the things that are uncertain or unknown, because that's where they find things out. So each piece or work just builds evidence one way or another. And the conclusions slowly adjust to the new evidence. I'm glad that people, like you, too, care about our world, and have an interest in the way our world works!
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