 Experts say prevention is key. That starts with drinking plenty of water. Be sure to monitor for signs of heat exhaustion, such as heavy sweating, dizziness, fatigue, headache and fast heartbeat. President Biden will hold a rare solo news conference on Thursday and CBS News contributor and former White House correspondent Peter Mayer says it's make or break. This will be a high stakes news conference. It's definitely the most consequential for President Biden. Only his second formal news conference this year.