Can you imagine trying to feed 9 billion people?

I mean, it's hard enough to feed ourselves some days.

But come 2050, Earth will be responsible for feeding an additional 2 billion people roaming the planet. The question is: how to do that?

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Gates Foundation: The Story of Food

He has ALS. He can no longer speak. And he needs you to listen to him talk about it.

ALS took his ability to move. So he started a movement.

ALS doesn't strike with a terrifying blow. It is a gradual, creeping illness. A thousand tiny cuts that slowly add up.

For Hiro Fujita, amyotrophic lateral sclerosis started with his arms feeling heavy. Then his legs began to hurt and it became harder to climb stairs. He went to the doctor almost as a precaution, expecting to be told it was nothing serious.

Instead, on Nov. 26, 2010, Hiro was diagnosed with ALS. It is the same devastating disease suffered by astrophysicist Stephen Hawking. Hawking has lived 50 years with ALS. Hiro was told he could expect to live three to five years at most before the disease attacking his motor neurons shut down his body completely.

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