One can learn a lot by browsing Twitter. In early October, for example, I found out that one way to tell if a particular lung cancer treatment (anti-PD-1/anti-PD-L1 therapy) is working is if the gray hair of patients returns to its youthful color; eight species of roundworms were discovered living in California's Mono Lake despite its high levels of arsenic; and, seriously, the president of the United States tweeted that Democrats “are continuing to interfere in the 2016 Election.” Make that witch hunt a tachyon hunt.