After a year of breakneck growth, the big five tech companies—Alphabet, Amazon, Facebook, Apple and Microsoft—are coming back down to earth. We look at how the pandemic has changed the industry and spurred on smaller firms. Serbia’s military build-up is making its neighbours nervous. The country’s president tells us why he’s been amassing arms. And evolution usually unfolds over millions of years. But new research into Mozambique’s tuskless elephants suggests that it can be turbocharged by humans. Additional audio used with permission from the Howard Hughes Medical Institute.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer
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