Nathan Rott

Ukrainian officials are warning that the next few days could be critical to a key city in the region.

Russia is preparing to launch another offensive, this time concentrating its attacks on the eastern part of Ukraine.

In the eastern region of Ukraine, authorities say dozens of civilians were killed when a missile hit a train station. Ukrainian officials say the station was full of people trying to evacuate.

The Biden administration is planning to announce new sanctions on Russia in response to the horrific scenes of alleged war crimes in the Kyiv suburb of Bucha.

In Bucha, Ukraine, Russia is accused of carrying out war crimes against civilians. The United Nations has said an independent investigation is needed to ensure accountability.

In the Ukrainian town of Bucha, dead bodies have been found along with mass graves after Russian forces withdrew from the area. It is on the outskirts of the capital city Kyiv.

As Ukrainian troops and journalists enter towns previously occupied by Russia they've found dead bodies along roadsides and amid the wreckage of towns north of Kyiv.

Ukrainian forces continue to take back territory around the country's capital, as Russian troops retreat from the region.

Just days ago — during another round of peace talks — Russia said it would reduce its troop presence around the capital Kyiv. Ukrainians are skeptical that Russia is going to relieve pressure.

For the first time since Russia's invaded Ukraine, there's a sign of progress towards peace. Negotiators for the two countries met in Istanbul Tuesday, with both sides outlining possible concessions.

Intelligence reports warned of Russian provocations along the routes, Ukrainian officials said. Ukraine and Russia have regularly agreed to establish corridors from some of the hardest-hit cities.

Ukrainian officials say their military and regular citizens are pushing back against Russian forces in parts of the country, while in others Russian shelling and bombings continue.

The Russian military has announced it will focus its attacks on eastern Ukraine, rather than the across the country as it has been doing. But experts are skeptical that will happen.

One in four Ukrainians have been displaced in the month since Russia invaded Ukraine, millions of them children. In recent days, there hasn't been a lot of movement on either side of the war.

A new report finds global energy related carbon dioxide emissions rose 6% last year to an all-time high. The report from the International Energy Agency means bad news for the world's climate.

The U.S. oil and gas industry and its backers are seizing on the war in Ukraine to promote domestic energy production. Opponents say it makes more sense to ramp up renewable energy.

In tree ring records dating back to AD 800, the only multidecade drought that came close to today's was in the 1500s. Researchers say climate change is a factor and the U.S. must plan for less water.

The Los Angeles Rams defeated the Cincinnati Bengals, 23-20, to win the team's first Super Bowl since moving back to the West Coast from St. Louis.

For the first time, the federal government is making a sizeable investment in wildlife road crossings. The goal is to help slow extinctions, and also protect people from animal collisions.

Millions of animals die on roads, and the new infrastructure law includes money for wildlife crossings to keep them safe. We visit the site where the first major urban crossing will soon be built.