They were exploring things like what affects how grass grows, how electricity works, and why bread gets moldy.

WHITEHOUSE: Office of Science and Technology Policy Blog

Nowadays, the grass grows shin-high within the power station's security fence, the paintwork is peeling and the cement crumbling.

ECONOMIST: A long half-life

This is local grass that grows in the monsoon.

BBC: News Online

But anybody who grows switch grass, I suppose, is going to be happy, because we're going to spend a lot of money trying to find out how to make an ethanol from it.

NPR: Budget Breakdown: Defense, Health and Energy