Live locally, as they say, but think globally. Or think even bigger. To put our COVID, climate change, China and Afghanistan worries in context, we can reflect on our place in space. Scientists have evidently found a class of habitable planets that could be ‘our best bet’ to detect alien species in the next few years. Astronomers have identified more than 4000 ‘hydrogen rich’ planets orbiting other stars. They estimate there are 100 billion across the Milky Way. that’s 100 times a thousand million, which is a lot.

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