The U.N. chief warns that reliance on fossil fuels is pushing the world to the brink At the opening of a United Nations climate conference in Glasgow, Scotland, António Guterres says the world is "digging our own grave" by not acting more aggressively to mitigate climate change. Scott Neuman
Kathryn Whitehead: How can we safely deliver vaccines to the right cells? mRNA vaccines are groundbreaking—but the mRNA inside them is fragile. Kathryn Whitehead explains how scientists have created the right "packing material" to safely deliver these to the right cells. Rachel Faulkner
Erika Hamden: What does it take to send a telescope into the stratosphere? Astrophysicist Erika Hamden spent 10 years building FIREBall, a telescope that reaches the stratosphere and looks for clues to how stars form. Launching it was more challenging than she ever imagined. Manoush Zomorodi
Sorry arachnophobes, you have more in common with spiders than you thought Although spiders are sometimes thought of as being creepy crawly animals, new evidence suggests some get scared and assess danger in almost the same way as humans. Gus Contreras
Scientists may have found a planet outside of the Milky Way galaxy for the first time While researchers have found more than 4,000 planets in our own galaxy, this is the first time anyone has found what could be a planet that exists outside the Milky Way. Sharon Pruitt-Young
People wonder if they should keep calm and carry on in the face of delta plus variant A new coronavirus variant — known as delta plus — has cropped up in the U.K. There's concern it could be more dangerous than the highly contagious delta variant. What does the science actually show? Michaeleen Doucleff
An endangered Sumatran orangutan at the New Orleans zoo is expecting twins The births will be the first for Menari, zoo officials say. She is expected to give deliver the twins sometime this winter. Jonathan Franklin
Researchers pinpoint when the Vikings came to Canada. It was exactly 1,000 years ago It has long been known that the Vikings arrived in the Americas sometime before Christopher Columbus. Now, a new article in the journal Nature concludes the exact year was 1021. Jaclyn Diaz
La Niña winter is coming Do you feel it? The chill in the air? Meteorologists are predicting a La Niña weather pattern for this winter. Assistant state climatologist Karin Bumbaco explains what it means for Western Washington. Caroline Chamberlain Gomez
Fewer cars on the road during lockdowns was good news for frogs and salamanders Fewer cars were on the road during pandemic lockdowns. And for Maine's frogs and salamanders, that translated to far fewer roadkill deaths. Alejandra Marquez Janse
