Ukraine pressed ahead Sunday with efforts to restart grain exports from its Black Sea ports under a deal aimed at easing global food shortages but warned deliveries would suffer if a Russian missile strike on Odesa was a sign of more to come. President Volodymyr Zelenskiy said Saturday's attack showed Moscow can't be trusted to implement a deal struck just one day earlier with Turkish and UN mediation. Despite the attack, Kyiv said plans to resume grain shipments were ongoing.

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The panel probing the Jan. 6, 2021, attack on the Capitol plans to push its investigation further in the coming weeks, interviewing additional members of former President Donald Trump's cabinet and campaign, as well as Secret Service members, the committee's vice chair Rep. Liz Cheney, told CNN. The committee has yet to decide whether to make a criminal referral concerning Trump's conduct to the Justice Department, but Cheney said, "that's absolutely something we're looking at."

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Virtually all the contiguous United States experienced above normal temperatures in the past week, with more dangerously hot weather forecast. The U.S. heatwave followed record heat that killed hundreds if not thousands of people and sparked wildfires in Europe, and now much of California is suffering from heat, drought and fires. We take a deep dive into what climate scientists say is causing the heatwaves..

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Russia and Ukraine are among the world's leading exporters of wheat, but this country leads all nations in annual wheat production.

Friday's answer: The Earth's highest officially registered temperature is 134 degrees Fahrenheit, recorded in California's Death Valley in 1913.