Denise Chow

Today, people around the world will celebrate the 45th Earth Day. To mark the occasion, we here at Live Science chose some of our favorite photos of our home planet.

Amazon has won approval from the Federal Aviation Administration to begin testing delivery drones in the United States.

Physicist Jon Butterworth will recount the dramatic hunt for the Higgs boson in a lecture tonight (April 1) at the Perimeter Institute for Theoretical Physics in Waterloo, Canada.

Arctic sea ice hit its annual peak early this year, and climate scientists say the North's below-average ice conditions made this year's maximum extent the lowest on record.

Despite the never-ending chill and snow in the U.S. Northeast this year, the globe experienced the warmest winter months since record keeping began in 1880, scientists say.

A solar-powered plane, dubbed Solar Impulse 2, took flight this morning (March 9), embarking on the first leg of a planned journey around the world.

This year's Nobel Peace Prize has been awarded to two children's rights activists, Kailash Satyarthi and Malala Yousafzay.

The world of car racing is about to go green. The first-ever racing series featuring only electric cars will begin this weekend in China.

An earthquake that rattled remote parts of Alaska and northwestern Canada in July triggered an avalanche that spilled mounds of snow down a steep mountainside.

Tesla Motors is building a new factory in Nevada to produce batteries for its electric cars, the company announced Thursday (Sept. 4).

Japan's military could be extending its reach into space, with the country planning to develop a new force by 2019 to monitor the growing amount of space junk in orbit.

Drones have been banned from all national parks in the United States, according to new regulations established by U.S. government officials.

A "smart" garden, designed by researchers in the United Kingdom, can change the way it looks depending on the reactions of people on Twitter.

Tropical Storm Arthur appears menacing as it bears down on the coast of Florida, in this photo captured today (July 2) by astronauts aboard the International Space Station.

Scientist Stephanie Kwolek, who invented the ultra-tough synthetic fibers used in Kevlar body armor, has died at the age of 90, her colleagues announced today (June 20).

President Obama spoke out about climate change over the weekend, in a commencement speech delivered to new graduates at the University of California, Irvine.