15:44 The search for dark matter — and what we’ve found so far | Risa Wechsler TED 94,392 2,524 209 January 27, 2020
13:29 The problem of light pollution — and 5 ridiculously easy ways to fix it | Kelsey Johnson TED 44,523 1,656 149 January 6, 2020
15:11 After billions of years of monotony, the universe is waking up | David Deutsch TED 31,020 1,144 111 November 5, 2019