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asteroid 2024 yr4

An artistic rendering of an asteroid or comet striking near the Moon's south pole about 3.8 billion years ago, an impact that carved out two large craters.
Analysis

Is it a bird? A plane? Or a super asteroid aiming for Earth?

China is mobilizing against an asteroid with disturbingly good odds of hitting the planet. Here’s what you need to know.

Europe under threat from Russia
GZERO World with Ian Bremmer

Europe under threat from Russia

Russia is testing NATO’s red lines with escalating drone attacks and airspace violations. Can Europe defend Ukraine and itself without help from the US? Polish Foreign Minister Radoslaw Sikorski joins Ian Bremmer on GZERO World.