At last we have at least a partial explanation for why Tesla Inc’s stock gained 500% this year: Massive bets on high-flying technology shares by SoftBank Group Corp and others using equity derivatives. The extraordinary rise valued Elon Musk’s electric car business at $464 billion at the peak in late August, when only six US companies were worth more. Unfortunately ...

New York City (NYC), the epicenter of the coronavirus pandemic last spring, and the largest public school district planning to begin at least some in-person instruction, has botched its reopening plans for the fall. Its mistakes are a cautionary tale for school systems across the US that are struggling to balance the benefits of resuming their educational programs against the ...

As President Donald Trump repeatedly touts the possibility of a Covid-19 vaccine winning approval by Election Day, the companies he needs to make that happen are pushing back. And that’s a good thing all around. Nine major coronavirus vaccine developers — including Pfizer Inc, AstraZeneca Plc, and Moderna Inc — signed a joint pledge under which they committed not to ...