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After a year of breakneck growth, the big five tech companies\\u2014Alphabet, Amazon, Facebook, Apple and Microsoft\\u2014are coming back down to earth. We look at how the pandemic has changed the industry and spurred on smaller firms. Serbia\\u2019s military build-up is making its neighbours nervous. The country\\u2019s president tells us why he\\u2019s been amassing arms. And evolution usually unfolds over millions of years. But new research into Mozambique\\u2019s tuskless elephants suggests that it can be turbocharged by humans. Additional audio used with permission from the Howard Hughes Medical Institute.

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