What to read around the web today

• How mosquitoes changed everything. The New Yorker
• ‘Don’t be a Bernie Bro’: Inside conservatives’ brazen campaign to sabotage Trump’s signature drug pricing plan. STAT
• In the ‘Juul room’: E-cigarettes spawn a form of teen addiction that worries doctors, parents and schools. The Washington Post
• Isolated and struggling, many seniors are turning to suicide. NPR
• New protocol for HIV prevention drug reduces the number of pills required. Kaiser Health News