The Bard described death as "the undiscovere'd country, from whose bourn no traveller returns." I guess we can't fault him for not knowing about this awesome keyboard shortcut, courtesy of Business Insider's Melia Robinson:
Command [plus] shift [plus] t reopens the last tab.
Ctrl [plus] Shift [plus] T.
Try it right now. Close this tab and bring it back. I dare ya.
See how cool that was? This miraculous finger-to-keyboard resuscitation, a sort of Ctrl-Z for the entire Internet, means no more called-out cusswords, no more wishing the back button had you covered when, aiming to click on a tab, you accidentally hit the little X on the tab's starboard. With just one more step than the Ctrl-T that gives new tabs life, the E*Trade tab you mistakenly closed will pop back into existence, all cued up to sell those 10,000 shares of stock. Don't worry, the trick works in Firefox and Internet Explorer, too, so clumsy mousing won't send your long political post on your uncle's Facebook page on a one-way trip to the undiscovere'd country in those browsers, either.