In a useful online discussion about climate change on the New Yorker website, environment writer Elizabeth Kolbert spells out the problem:
'Just because you look out the window and things look OK, that's not the issue. The issue is what are we locking in for our kids. We are absolutely determining the world that our children and our grandchildren will live in right now. We could be handing off a problem to our children which they cannot manage because we've made it so big.'
Knot theory could help spacecraft navigate crowded solar systems
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It can be difficult to figure out how to move a spacecraft from one orbit
to another, but a trick from knot theory can help find spots where shifting
orbit...
9 hours ago
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