UN climate chief presses for faster action, says humans have 2 years left ‘to save the world’
OXFORD, England — Humanity has only two years left “to save the world” by making dramatic changes in the way…
What would happen without a Leap Day? More than you might think
NEW YORK — Leap year. It’s a delight for the calendar and math nerds among us. So how did it…
Have a look at the whos, whats and whens of leap year through time
NEW YORK — Leap year. It’s a delight for the calendar and math nerds among us. So how did it…
Private lander makes first US moon landing in more than 50 years
CAPE CANAVERAL, Fla. — A private lander on Thursday made the first U.S. touchdown on the moon in more than…
Countdown begins for April’s total solar eclipse. What to know about watch parties and safe viewing
The sun is about to pull another disappearing act across North America, turning day into night during a total solar…
Space shuttle Endeavour hoisted for display in launch configuration at Los Angeles science museum
LOS ANGELES — NASA’s retired space shuttle Endeavour was carefully hoisted late Monday and attached to a huge external fuel…
The Most Important Unsolved Problem in Computer Science
When the Clay Mathematics Institute put individual $1-million prize bounties on seven unsolved mathematical problems, they may have undervalued one…