The cost of emailing your doctor, a fentanyl vaccine and endangered wildlife | Hot off the Wire podcast

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With the long holiday weekend, we’ve compiled several recent health and science stories:

» Want to email your doctor? You may be charged for that.

» Pausing breast cancer treatment for pregnancy appears safe.

» A vaccine may help in the fight against the nation’s fentanyl crisis.

» The Pentagon has received “several hundreds” of new UFO reports.

» A relative of the manatee is among 700 new species now facing extinction.

» The oldest DNA reveals life in Greenland 2 million years ago.

» Tourists dive and learn more about the threatened Great Barrier Reef.