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CNN By Adrienne Vogt, Ben Westcott, Adam Renton, Sheena McKenzie and Ed Upright, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Ashley Strickland and Katie Hunt, CNN NASA has postponed a spacewalk that was scheduled for Tuesday after receiving a space debris warning for the International Space Station. Just hours before the astronauts were due to venture out of the ISS, the agency said on its Twitter account that “due to the lack of opportunity

By Adrienne Vogt, Ben Westcott, Adam Renton, Sheena McKenzie and Ed Upright, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Aditi Sangal, Helen Regan, Meg Wagner, Melissa Macaya, Brad Lendon, Rob Picheta and Ed Upright, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

CNN By Aditi Sangal, Helen Regan, Meg Wagner, Melissa Macaya, Brad Lendon, Rob Picheta and Ed Upright, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Rob Picheta, CNN Editor’s note: The Omicron coronavirus variant has now been identified in dozens of countries globally and this story will no longer be updated. Follow the latest updates on the spread of the variant here. Nations around the world are racing to identify how many cases of the Omicron variant they have,

By Martin Goillandeau and Ivana Kottasová, CNN The world is in a “race against time” with the Omicron coronavirus variant, said European Commission President Ursula von der Leyen on Sunday, warning during a visit to Latvia that scientists and manufacturers will need weeks to fully understand the new variant. As more cases are identified and

CNN By Ivana Kottasová, CNN Many of the world’s richest countries have spent the past year hoarding coronavirus vaccines, buying up enough doses to vaccinate their populations several times over and consistently failing to deliver on their promises to share doses with the developing world. The World Health Organization said the approach was “self-defeating” and

By Ivana Kottasová, CNN Many of the world’s richest countries have spent the past year hoarding coronavirus vaccines, buying up enough doses to vaccinate their populations several times over and consistently failing to deliver on their promises to share doses with the developing world. The World Health Organization said the approach was “self-defeating” and “immoral.”

By Ashley Strickland, CNN Focusing on gratitude has helped me through this year. And in the spirit of Thanksgiving, I wanted to say that I’m so thankful for all of you in this feel-good edition of Wonder Theory. Thank you for joining us on our exploratory adventures through the wonders of space and science. Thank

By Ivana Kottasová, CNN As fears mount over the newly identified coronavirus variant Omicron, governments around the world are scrambling to protect their citizens from a potential outbreak. The new mutation, which is potentially more transmissible, was first discovered in South Africa and has since been detected in Australia, United Kingdom, Germany, Israel, Italy, the

By Melissa Mahtani, Aditi Sangal Adrienne Vogt and Fernando Alfonso, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By David McKenzie, Ghazi Balkiz and Ivana Kottasová, CNN The discovery of a new and potentially more transmissible coronavirus variant by South African health authorities has sparked a forceful reaction across the world with a number of countries banning travelers from several southern African countries. The newly identified variant, currently known as B.1.1.529, appears to

By Kara Fox, Krystina Shveda, Natalie Croker and Marco Chacon, CNN Monterey Park. Atlanta. Orlando. Las Vegas. Newtown. Parkland. San Bernardino. Uvalde. Ubiquitous gun violence in the United States has left few places unscathed over the decades. Still, many Americans hold their right to bear arms, enshrined in the US Constitution, as sacrosanct. But critics

By Katie Hunt, CNN The first fossil evidence of a pine cone sprouting seeds has been preserved in 40 million-year-old amber. Seed germination typically occurs in the ground after a seed has fallen, but several embryonic stems were captured emerging from the ancient pine cone in a rare botanical feat known as precocious germination, or

CNN By David McKenzie and Ghazi Balkiz, CNN South Africa’s health minister announced Thursday the discovery of a new coronavirus variant that appears to be spreading rapidly in parts of the country. “Initially it looked like some cluster outbreaks, but from yesterday, the indication came from our scientists from the Network of Genomic Surveillance that

By David McKenzie and Ghazi Balkiz, CNN South Africa’s health minister announced Thursday the discovery of a new coronavirus variant that appears to be spreading rapidly in parts of the country. “Initially it looked like some cluster outbreaks, but from yesterday, the indication came from our scientists from the Network of Genomic Surveillance that they