A high-pressure weather system is predicted to bring record-breaking temperatures to much of the U.S. this week, according to National Weather Service (NWS) forecasters. The excessive heat threatens a large swath of the country with multiple days of dangerously high temperatures. The heat wave coincides with the observance of Juneteenth on Wednesday. Traditionally celebrated with outdoor activities such as barbecues, the extreme heat poses a challenge as around 80 million people are under a heat advisory or warning.

SEE HOW THE WORLD IS COPING WITH RECORD-HIGH HEAT

A new line of PCs specially made to run artificial intelligence programs hit stores on Tuesday as tech companies push toward wider adoption of ChatGPT-style AI. Microsoft in May announced the new AI-powered personal computers, which will use the company's software under the Copilot Plus brand. The idea is to allow users to access AI capabilities on their devices without relying on the cloud, which requires more energy, takes more time, and makes the AI experience clunkier.

NEW AI-POWERED PCS CAN KEEP TRACK OF EVERY FUNCTION

Schools in the Los Angeles Unified School District are considering banning smartphones in academic institutions, an attempt to keep its 429,000 students insulated from the dire effects of smartphone use. The board in L.A., the second-largest in the U.S., is scheduled to vote on the proposal in the next 120 days. The goal is to create a policy that would prevent students from using their phones and social media.

THE PROS AND CONS OF A SCHOOL-WIDE SMARTPHONE BAN

According to the National Center for Education Statistics, what percentage of US students K-12 see their smartphone use banned?

Tuesday's answer: Dwight Eisenhower was the first president to appear in a TV campaign ad, airing "Eisenhower Answers America" in the 1950s.