Record Heat Wave Scorches Southern U.S., Straining Energy Grid

Millions of people across Texas, Florida, and Louisiana face dangerous temperatures over 100 degrees that will last for days.
The heat wave is forecast to break records and put pressure on the energy grid and infrastructure.
Climate scientists say more frequent and intense heat waves are a result of climate change.
Officials are urging people to stay hydrated, limit time outside, and not leave children or pets in hot vehicles.
The heat wave will spread to other southern and eastern states over the holiday weekend.