On Tuesday, Virgin Atlantic flew a large passenger jet from London to New York using 100% "Sustainable Aviation Fuel" (SAF). The flight was meant to show that it's possible to fly using cleaner fuels, but experts disagree about the effects of SAF on the climate.

Scientists are worried about the future of the axolotl, an unusual Mexican salamander, and they're asking for help. A new program lets people "adopt" an axolotl to raise money to support efforts to save the endangered animal.

Tensions are rapidly rising between North and South Korea. The situation got worse quickly after North Korea launched a rocket that sent a spy satellite into space. Both sides have now pulled away from a 2018 agreement that was meant to prevent conflicts.

Casey McIntyre recently died of cancer. Before she passed away, Ms. McIntyre set up a way to help others. Now, over 60 million of other people's medical bills.

As the world struggles to deal with the climate crisis, some companies are working to remove polluting carbon dioxide from the air. That's a huge and challenging goal, but two US companies have recently made important progress.

Last Wednesday, US President Joe Biden and Chinese President Xi Jinping held a four-hour meeting near San Francisco, California. The meeting was aimed at improving the relationship between the two countries, which has been getting worse in recent years.

On Monday, people across Kenya took part in the country's first national tree-planting holiday. The holiday was created by Kenya's president, William Ruto, to encourage people to plant trees as part of a plan to fight the climate crisis.

For nearly four months, TV and movie actors in the US have been on strike. Last Wednesday, the actors union reached a deal with the studios that make TV shows and movies, bringing the strike to an end. The union got much of what it was asking for, but not everything.

Tuvalu is a tiny island nation in the Pacific Ocean. It's also one of the countries most threatened by climate change. Now Australia and Tuvalu have made a deal that gives the people of Tuvalu a place to go if their islands become unsafe because of rising seas.

Yesterday, the National Zoo in Washington, DC said goodbye to its giant pandas, as they left for China. It's the first time the zoo hasn't had pandas in 23 years, and it may mark the end of a 50-year program. The pandas will be greatly missed by the zoo and its visitors.