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SALT LAKE CITY -- Ferocious tyrannosaur dinosaurs may not have been solitary predators as long envisioned, but more like social carnivores such as wolves, new research unveiled Monday found. Paleontologists developed the theory while studying a mass tyrannosaur death site found seven years ago in the Grand Staircase-Escalante National Monument in southern Utah, one of two monuments that the Biden administration is considering restoring to their full size after former President Donald Trump…

Apple Inc will bring social media app Parler, favoured by U.S conservatives, back to its App Store after the iPhone maker pulled it following the deadly Jan. 6 U.S. Capitol riot, according to a letter sent to two Republican lawmakers. Source

NASA's experimental Mars helicopter rose from the planet's dusty red surface into the thin air Monday, achieving the first powered, controlled flight on another planet. The triumph was hailed as a Wright brothers moment. The mini 1.8-kilogram copter named Ingenuity, in fact, carried a bit of wing fabric from the 1903 Wright Flyer, which made similar history at Kitty Hawk, N.C. Source

CAPE CANAVERAL, FLA. -- NASA's experimental Mars helicopter rose from the dusty red surface into the thin air Monday, achieving the first powered, controlled flight on another planet. The triumph was hailed as a Wright Brothers moment. Source

The Ingenuity helicopter is preparing for its historic flight on Mars Monday if everything goes according to plan. The first powered, controlled flight on another planet will take place at 3:30 a.m. ET on April 19, according to NASA. Source

TORONTO -- Earth’s oceans have been losing oxygen for decades due to global warming, and a new study suggests that these oceans will continue to do so for centuries, even if humans stopped all CO2 emissions immediately. Source

Mars was a warm, wet planet that was likely capable of supporting life billions of years ago. Something caused the planet to lose its atmosphere and turn into the harsh, frozen desert it is today. Source

An overwhelming majority of people around the globe want emojis to be more inclusive and culturally distinct so they can show how they feel, according to a new Adobe study. Adobe's latest Global Emoji Diversity & Inclusion report released Thursday found 83% of global emoji users want designers of the small digital images used to convey emotions to incorporate more inclusive representation. Source

This column is an opinion by Geoff Stiles, an Ottawa-based international consultant in energy efficiency, renewable energy and carbon finance, with more than 30 years' experience in these fields. For more information about CBC's Opinion section, please see the FAQ. Source

LOS ALTOS, CALIF. -- Charles "Chuck" Geschke -- the co-founder of the major software company Adobe Inc. who helped develop Portable Document Format technology, or PDFs -- died at age 81. Geschke, who lived in the San Francisco Bay Area suburb of Los Altos, died Friday, the company said. Source