CNN – World

By Kristen Rogers, CNN The star ingredient responsible for an airy, bubbly pizza crust is yeast. As cells that eat sugar and convert into carbon dioxide, yeast is what makes dough rise — yet Italian scientists have discovered a way to make pizza dough without it. Because of a severe yeast allergy, Italian materials scientist

By Rob Picheta and Isabelle Jani Friend, CNN Several European nations are facing a new spike in Covid-19 cases because they scrapped pandemic restrictions too soon, a senior World Health Organization (WHO) official has warned. The coronavirus is back on the rise in 18 European countries, including the United Kingdom, France, Italy and Germany, Hans

By Ashley Strickland, CNN European Space Agency astronaut Matthias Maurer’s first spacewalk was an eventful one, beginning and ending with helmet issues. Maurer and NASA astronaut Raja Chari began the spacewalk at 8:32 a.m. ET. At the beginning of the walk, Maurer experienced an issue involving the camera and light assembly on his helmet, which

By Ashley Strickland, CNN An artificial lake off the west coast of Sicily was once one of the largest sacred pools in the ancient Mediterranean 2,500 years ago — and it was aligned with the stars, according to new research. Previously, researchers thought the rectangular lake was a military harbor that participated in Mediterranean trade.

By Rachel Ramirez, CNN Air pollution spiked to unhealthy levels around the world in 2021, according to a new report. The report by IQAir, a company that tracks global air quality, found that average annual air pollution in every country — and 97% of cities — exceeded the World Health Organization’s air quality guidelines, which

By Ashley Strickland, CNN There are now more than 5,000 confirmed planets beyond our solar system, according to NASA. The latest addition of 65 exoplanets to the NASA Exoplanet Archive contributed to the scientific milestone marked on Monday. This archive is the home to exoplanet discoveries from peer-reviewed scientific papers that have been confirmed using

By Scottie Andrew, CNN A young Ukrainian girl who recently performed a moving rendition of the “Frozen” hit “Let It Go” for her fellow citizens at a Kyiv bomb shelter is safe in Poland. And in an emotional performance from her host country, the girl honored Ukraine with an a cappella version of its national

CNN Editorial Research Here’s a look at the Jewish holiday of Passover. The holiday will be celebrated from sundown on April 5 through April 13, 2023. Facts Passover, also called Pesach, is the Jewish festival celebrating the exodus of the Israelites from Egyptian slavery in the 1200s BC. The story is chronicled in the Old

CNN Editorial Research Here’s a look at crude oil reserves and production around the world. Facts Crude oil is a form of liquid petroleum, extracted from rock formations and used for fuel and other purposes. Members of the Organization of the Petroleum Exporting Countries (OPEC) produce about 37% of the world’s crude oil, and possess

By Megan Marples, CNN The late-afternoon sun shone down on a sandstone ridge in Montana, illuminating a large sinkhole that had been soaked from rain showers earlier in the day. Commercial paleontologist Craig Pfister said he spotted parts of a pelvis and femur bones glinting in the light while he was meandering on private land.

CNN Editorial Research Here’s a look at the Kyoto Protocol, an agreement reached in Kyoto, Japan, in 1997, mandating that industrialized nations cut their greenhouse gas emissions. Facts 192 parties have ratified the protocol (191 states and one regional economic integration organization). The United States has not; it dropped out in 2001. The protocol mandated