China has opened its borders for the first time since the pandemic began. So, if you’re thinking of moving or traveling there, brace yourself for some unpleasant experiences. Watch out for “gutter oil” in restaurants, don’t mind the stares of curious strangers, and be prepared to battle your way onto packed buses. | Sunday Roast

These solid objects can move and change...all by themselves. Watch how it works (via TED Fellows): | TED