Ukraine war latest: Ukraine 'may or may not be Russian someday', Trump says as his aides prepare for Kyiv visit
Donald Trump has speculated on the prospect of a Ukraine-Russia peace deal - as talk over potential negotiations intensifies.
Could a climate megaproject cloud Chile's unparalleled views of universe?
As night falls on the Atacama desert in northern Chile four giant telescopes turn their gaze towards the star-strewn heavens.