During daytime, entire districts of Ukraine's capital are disconnected from the power grid to save energy. Traffic lights stop, choking traffic, accompanied by the constant rumble of generators installed outside cafes and shops.

Ukraine, including Kyiv, is struggling to cope with a new wave of rolling blackouts after relentless Russian attacks took out half the country's power generation capacity.

President Joe Biden begins an intense period of private preparations Friday at Camp David for what may be the most consequential presidential debate in decades.

The 81-year-old Democrat's team is aware that he cannot afford an underwhelming performance when he faces Republican rival Donald Trump for 90 minutes on live television Thursday night. Biden's team is expecting aggressive attacks on his physical and mental strength, his record on the economy and immigration and even his family.

South Korea summoned the Russian ambassador to protest the country's new defense pact with North Korea on Friday, as border tensions continued to rise with vague threats and brief, seemingly accidental incursions by North Korean troops.

Earlier Friday, the powerful sister of North Korean leader Kim Jong Un issued a vague threat of retaliation after South Korean activists flew balloons carrying anti-Pyongyang propaganda leaflets across the border, and South Korea's military said it had fired warning shots the previous day to repel North Korean soldiers who briefly crossed the rivals' land border for the third time this month.

Not content with merely taking a victory lap after winning his battle against fellow rap superstar Drake, Kendrick Lamar turned his Juneteenth "Pop Out" concert at the Forum into a cathartic livestreamed celebration of Los Angeles unity.

Lamar curated a three-hour concert featuring a mix of up-and-coming LA rappers and stars including Tyler, The Creator, Steve Lacy and YG. When it was his turn to take the stage, the 37-year-old rapper powered through a set with Black Hippy collaborators Schoolboy Q, Ab-Soul and Jay Rock, performed his Drake diss songs "Euphoria" and "6:16 in LA," then was joined on-stage by Dr. Dre.

Things are looking up for the Iberian lynx. Just over two decades ago, the pointy-eared wild cat was on the brink of extinction, but as of Thursday the International Union for Conservation of Nature says it's no longer an endangered species.

Successful conservation efforts mean that the animal, native to Spain and Portugal, is now barely a vulnerable species, according to the latest version of the IUCN Red List.

Human-caused climate change dialed up the thermostat and turbocharged the odds of this month's killer heat that has been baking the Southwestern United States, Mexico and Central America, a new flash study found.

Sizzling daytime temperatures that triggered cases of heat stroke in parts of the United States were 35 times more likely and 2.5 degrees hotter (1.4 degrees Celsius) because of the warming from the burning of coal, oil and natural gas, World Weather Attribution, a collection of scientists that run rapid and non-peer reviewed climate attribution studies, calculated Thursday.

A monthslong heat wave across swathes of India has killed more than 100 people and led to over 40,000 suspected cases of heat stroke in the past three and a half months, according to data from India's Health Ministry.

Between March 1 and June 18, 110 people in India died after suffering heat strokes, according to Health Ministry data provided to The Associated Press. Officials from India's Health Ministry and its subsidiary body, the National Centre for Disease Control, which compiled the figures, declined to comment.

Jamal Musiala is lighting up the European Championship and showing just why his teammates think the 21-year-old forward can go on to become one of the best players in the world.

Musiala scored his second goal of the tournament on Wednesday to help Germany beat Hungary 2-0 and book its spot in the knockout stage.

It's sad but true, Copa America could mark Lionel Messi's final chapter with Argentina's national football team.

The World Cup winner will turn 37 during the tournament in the United States, which kicks off Thursday. He's clearly past his peak at Inter Miami after two decades of playing at the highest level in Europe.

Jose Mourinho's Champions League debut as coach of Fenerbahce will be in Switzerland in the second qualifying round next month.

Fenerbahce was drawn Wednesday to play Lugano with the first leg in Thun on July 23 or 24. The return game is in Istanbul the following week between teams who finished second in their national league.