Yogi Berra, a US baseball player
and philosopher, said,

"If we don't know where we're going,
we might not get there."

Accumulating scientific knowledge
is giving us greater insights,

greater clarity into what our future
might look like in a changing climate

and what that could mean for our health.

I'm here to talk about a related aspect

on how our emissions of greenhouse gases
from burning of fossil fuels

is reducing the nutritional
quality of our food.