WHO calls for a pause in COVID booster shots

The World Health Organization is calling for a halt on COVID-19 vaccine boosters until at least the end of September, its head Tedros Adhanom Ghebreyesus said on Wednesday, as the gap between vaccinations in wealthy and poor countries widens. This report produced by Jillian Kitchener. Reuters – WHO is calling for a moratorium on boosters until at least the end…

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How ancient Babylonian land surveyors developed a unique form of trigonometry — 1,000 years before the Greeks

Our modern understanding of trigonometry harks back to ancient Greek astronomers studying the movement of celestial bodies through the night sky. But in 2017, I showed the ancient Babylonians likely developed their own kind of “proto-trigonometry” more than 1,000 years before the Greeks. So why were the Babylonians interested in right-angled triangles? What did they use them for? The Conversation…

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