Sci-Tech

Saying humanity is waging war with the planet, the head of the United Nations isn't planning to let just any world leader speak about climate change at Monday's special "action summit."

The festivals are over and Earthlings from around the globe headed home Sunday after a weekend camping and partying in the dusty Nevada desert and trekking to remote gates of Area 51, a formerly top-secret U.S. military base long the focus of UFO and space alien lore. 2

Victoria is promising to plant 5,000 trees on public and private land by the end of 2020 as part of the United Nations Trees in Cities Challenge.

A drone with night-vision equipment was used early Saturday morning to find a pair of missing hikers in a wooded area of Halifax.

An international team of researchers set off Friday on the biggest and most complex expedition ever attempted in the central Arctic, a yearlong journey they hope will sharpen the scientific models that underpin human understanding of climate change.

Facebook says it has suspended tens of thousands of apps made by about 400 developers as part of an investigation following the Cambridge Analytica scandal.

The head of the House Intelligence Committee said Friday he has been assured by the CEO of Facebook that the company is working on ways to prevent foreign actors from disrupting next year's elections.

Bird species once considered 'abundant' are becoming more scarce in Canada and the U.S. after decades of decline that amounts to a net loss of almost 3 billion birds since 1970, according to new analysis. 2

Hordes of dragonflies are showing up on weather radar and making things interesting for weather forecasters in the Eastern United States.

The U.S. Navy has finally acknowledged footage purported to show UFOs hurtling through the air. And while officials said they don't know what the objects are, they're not indulging any hints either. 1

Apple's iOS 13 software update comes with plenty of privacy enhancements -- but in some cases, only if you take the time to understand how they work.

Huawei launched a new flagship smartphone on Thursday but it comes without popular Google apps such as Chrome or YouTube after U.S. sanctions kicked in, limiting its appeal to consumers.

Instagram has announced a new policy that will block, and sometimes remove, content promoting weight-loss or cosmetic procedures to younger teens.