233K views · 2.5K reactions | One of the biggest moments of Night 2 of the Democratic debates came when Kamala Harris repeatedly asked Joe Biden whether he regretted opposing federal busing policies during the early years of his Senate career. Biden notably bristled. Watch: | NPR | Facebook

134K views · 2.3K reactions | Dr. Anthony Fauci said a COVID-19 vaccine could be available by the end of this year or the beginning of 2021. "We feel cautiously optimistic," he told lawmakers on Capitol Hill on Tuesday. More: https://trib.al/nORS6HT | NPR | Facebook

43K views · 254 reactions | "I actually believe that we can both do right by our planet and also unleash a clean energy revolution in terms of jobs," said Democratic presidential candidate Julián Castro. Watch him discuss climate change with two Texas voters: https://trib.al/sylBjuZ | NPR | Facebook