Posts by 

Dan Kulpinski

Building a global fish-barcode library

Bruce Collette of Washington, DC is working to assign barcodes to all 30,000 fish species. Read more about building a global fish-barcode library.

Arctic haze and climate change

Murphy says you could look out the window of the airplane and see the air colored brown as you were flying, even though you're hundreds or thousands of miles from the nearest big city. He talks about the sources of this haze.

2026 Donation Campaign

If EarthSky has ever helped you discover something new, prepare for an eclipse, spot a planet, or simply inspired a moment of wonder, today is the perfect day to give back. Your donation helps keep trusted science news, expert night sky guides, and independent science journalism free for everyone.

Please help keep EarthSky going by donating today!

Please help keep

EarthSky going!

If you've already donated, we apologize for the popup and greatly appreciate your support.