Could we ever pull enough carbon out of the atmosphere to stop climate change? By Donavyn Coffey Can we harness natural and human-made carbon traps to help us slow climate change?
Why are galaxies different shapes? By Donavyn Coffey Some galaxies are swirling blue disks, others are red spheres or misshapen, clumpy messes or something in between. Why the different configurations?
What color is the sunset on other planets? By Donavyn Coffey It depends on whether the planet's atmosphere is predominantly filled with gas or dust particles.
What if Earth were a super-Earth? By Donavyn Coffey What would happen if our Earth were much larger than it is now?
