It is the first time researchers have drawn a direct link between a known piece of space debris crashing to Earth and pollution levels.
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Гангстер одним ударом расправился с туристом в Таиланде и попал на видео18:08
"We chose a threshold that requires a few searches within a short period of time, while still erring on the side of caution," Instagram's blog post explains. "While that means we may sometimes notify parents when there may not be real cause for concern, we feel — and experts agree — that this is the right starting point, and we’ll continue to monitor and listen to feedback to make sure we’re in the right place."