CNN – World

By Joshua Berlinger, Adam Renton, Lauren Said-Moorhouse and Aditi Sangal, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Megan Marples, CNN Laughter transcends all languages — and now scientists know this spontaneous response is universal across some primate species, too. The laughing patterns of human infants match those of great apes, according to a study published Tuesday in Biology Letters. Human adults primarily laugh while exhaling, whereas infants and great apes laugh

By Joshua Berlinger, Adam Renton, Lauren Said-Moorhouse, Aditi Sangal, Meg Wagner, Melissa Macaya and Melissa Mahtani, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Melissa Mahtani, Melissa Macaya, Veronica Rocha, Brad Lendon, Jessie Yeung and Sheena McKenzie, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Fernando Alfonso III, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Fernando Alfonso III and Mike Hayes, CNN The-CNN-Wire™ & © 2021 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

By Ashley Strickland, CNN The weather on Earth can be strange, but it may be nothing compared to global dust storms or nighttime snowfall on Mars that scientists are just beginning to understand. Before we send humans to other destinations across the solar system, the ability to create accurate weather forecasts will be necessary, according

By Ashley Strickland, CNN Some of the most insightful discoveries about the past have been found in caves. Like sanctuaries of history, caves have sheltered delicate fossils, artwork, ancient tools and even DNA in the dirt. Every unearthed revelation is another piece of the evolutionary puzzle. Places like Denisova Cave are the reason we know

By Angela Dewan, CNN As the climate crisis escalates, the world is banking on carbon-free energy to achieve a future with zero greenhouse gas emissions, or a net-zero future, where we remove just as much greenhouse gas from the atmosphere as we emit. One potential form of clean energy is green hydrogen — which can

By Angela Dewan, CNN Britain’s Queen Elizabeth II will attend a pivotal United Nations climate change conference in Glasgow this fall, organizers said in a tweet Friday, giving a royal boost to the event. The United Kingdom is hosting global leaders for the nearly two weeks of talks in the Scottish city from October 31

By Ashley Strickland, CNN The Perseverance rover isn’t letting any Martian dust settle under its wheels. It’s preparing to collect a core sample from another rock on Mars after its first attempt earlier this month amounted to a crumbly pile. The rover has moved on and driven 1,493 feet (455 meters) to a ridge called

By Lauren Kent, CNN Elephants are the largest land mammals on Earth, and understanding them better could lead to some incredibly large breakthroughs in science. Researchers backed by the European Union’s Horizon 2020 innovation program are doing a deep-dive study on elephant trunks, with the aim of improving the future of robotics, materials science and