interview > heywood > heywood 19
Heywood 19 (1:26)
Topic(s): Biofuels / Environment
© WGBH Educational Foundation
Please watch the clip first. If you plan to use it, review the Rules of Use, then click on the download button.
This clip is licenced under a Creative Commons Attribution Noncommercial 3.0 Unported License.
One can ask, "Can you provide fuel from other than
petroleum sources?" There's a fair amount of petroleum there, but
we need to be concerned about its long-term availability. There are
alternatives; some aren't so good. We can make petroleum-like fuels out
of coal, we've got heavy oils, we've got oil sands, tar sands,
we've got several options. They have extra greenhouse gas emissions
because of the processing extra energy involved in making those fuels.
They'll happen because they're looking economic. But yes, they do
provide fuel, but they'll increase the greenhouse emissions per mile
Then we got biofuels. Now, that's promising. It
certainly can supply a really useful component, 5 percent, perhaps 10 percent,
perhaps more. And 5 percents are hard to come by, so we need every one that
looks real and makes sense. Could they grow bigger? Maybe. But there are some
issues we need to sort out. We've got to get a very effective technology
of converting this biomass to fuel, so that we don't waste any energy
along the way. So a lot of issues there. But that's one of the good
things, with some cautions. Maybe developing parts of the world can develop
that as an alternative fuel stream. These will mitigate the impacts. They
won't remove them. So we've still got lots of hard work and lots of
careful, thinking decision-making ahead.