Google on Tuesday said it would introduce AI-generated answers to online queries made by users in the US, in one of the biggest updates to its search engine in 25 years. The search engine's AI answers, generated by Google's Gemini AI technology, offer a paragraph or two of explanation with links to the sources that supplied the information. The change seems to be an answer to growing pressure from AI-powered search engines like Perplexity and the repeated rumors that OpenAI, the creator of ChatGPT, is building its own AI search tool.

WHY CREATORS FEAR THE MOVE WILL HURT SEARCH ENGINES

Last year's northern hemisphere summer was the hottest in 2,000 years, according to a new study published Tuesday. Scientists say 2023 was the hottest year globally since records began in 1850, but the study in the journal Nature indicates human-caused climate change pushed northern summer highs beyond anything seen in two millennia. Scientists used tree-ring data to estimate global temperatures between the first century AD and 1850, before the advent of modern instruments.

SEE THE METHODS SCIENTISTS USED TO TRACK CLIMATE DATA

AMC Entertainment raised $250 million as "new equity capital" after it put up for sale its 72.5 million shares, thanks in part to the revival of the meme-stock trade. The equity offering of the company was launched initially on March 28, and when the meme trade roared back to life with the resurfacing of "Roaring Kitty," it ushered in great news for the theater chain, which eventually led to completion of the equity offering.

HOW THE RETURN OF 'ROARING KITTY' SENT AMC SURGING

What company's stock claimed the record for the largest single-day gain -- only to have it broken the next day by this company's stock?

Tuesday's answer: Melinda French Gates' net worth is $13.3 billion, according to Forbes. Her ex, Bill Gates, has a net worth of $153 billion.