but I think the more interesting question is how we did it. That's what's been obsessing me over the last years, that's the investigation I've been on,
Steven Johnson: How humanity doubled life expectancy in a century | TED · TED
How native speakers pronounce “obsessing”
1 example from real videos — listen, replay, loop.
1 / 1
but I think the more interesting question is how we did it. That's what's been obsessing me over the last years, that's the investigation I've been on,
Steven Johnson: How humanity doubled life expectancy in a century | TED · TED