When it comes to extreme weather, heat can be a “silent killer.”<br /><br />As the climate warms, small changes in average temperature can have big impacts, including an increase in the number of people exposed to extreme heat.<br /><br />Follow on social for more NOVA content!<br />Twitter: https://twitter.com/novapbs<br />Instagram: https://www.instagram.com/novapbs<br />TikTok: https://www.tiktok.com/@novapbs <br /><br />This excerpt from a NOVA documentary is made possible by viewers like you. Support your local PBS station here: https://pbs.org/donate/
