Democratic Sen. Tammy Baldwin wrote a letter to Pfizer CEO Ian Read on Monday, urging the pharmaceutical company executive to stop "playing games" and "make permanent price reductions" for its drugs.
The bottom line: Pfizer is under no obligation to change its deal with President Trump, who tweeted threats toward Pfizer after the company instituted mid-year price hikes on 100 products. But Pfizer only delayed those price increases until 2019, and didn't make any changes to underlying pricing practices.
In an experiment, Australian scientists killed more than 80% of the mosquitoes that spread dengue fever, Zika and chikungunya by using a sterilization technique in locations across north Queensland.
Why it matters: This experiment was conducted as part of a global effort to combat the pest that infects millions with disease each year, and its success offers a potential solution to controlling the spread of deadly illnesses.