Posts by 

Dave Adalian

Save the Frogs Day is today, Tuesday, April 28

Save the Frogs Day - a global amphibian conservation effort - is today, Tuesday, April 28, 2026. Amphibian health is an important marker of ecosystem quality.

Join the worldwide 2026 City Nature Challenge this weekend!

This weekend, April 24-27, 2026, join the global City Nature Challenge and record the biosphere in your neighborhood to help track real-time change.

Milky Way and Andromeda held together by dark matter sheet

A new computer simulation shows the Milky Way and nearby galaxies are in a sheet of dark matter between 2 voids. Galaxies on the outside fly away from us.

Galaxy MoM-z14 confirmed as most distant object ever seen

Galaxy MoM-z14 - a bright galaxy that existed 280 million years after the Big Bang - is for now the most distant object ever measured by astronomers.

Oldest wooden tools yet unearthed found in southern Greece

The oldest wooden tools used by early humans have been uncovered in an ancient lakebed in Greece. The hand tools date to 430,000 years ago.

Fast-spinning asteroid 2025 MN45 rewrites rotation record

2025 MN45 - a newly discovered fast-spinning asteroid - is the fastest-rotating object of its size ever discovered. It rotates once every 1.88 minutes.

Fall hummingbird migration in progress across North America

The fall hummingbird migration typically lasts from August through October. Spot the birds in every U.S. state and Canadian province as they travel south.

Did alcohol and evolution go hand in hand for humanity?

Alcohol and evolution: Eating alcohol-laden fruit might have helped early hominids socialize. Later, did making alcohol drive the rise of agriculture?

Why do we sleep? Study blames overloaded brain cells

Why do we sleep? University of Oxford researchers may have cracked the mystery: an electrical buildup within cellular components.

Tsunami triggered by magnitude 8.8 earthquake

A magnitude-8.8 earthquake struck off the coast of eastern Russia on Wednesday, July 30. The resulting 13-foot (4-meters) tsunami struck the Russian coast.