Vinod Khosla

Will biofuel usage require land? Absolutely, but we think the ability to use winter cover crops, degraded land, as well as using sources such as organic waste, sewage, and forest waste means that actual land usage will be limited. Just these sources can replace most of our imported oil by 2030 without touching new land.

Entrepreneurs can benefit a lot from the right help and advice, and you can avoid costly mistakes. You can get incredible leverage in hiring people who wouldn't even talk to you if you have the right help. An investor isn't about money - it's about the help and advice you can get.

Knowing whose advice to take and on what topic is the single most important decision an entrepreneur can make.

Startups allow technologists and scientists to take risks and change plans in a way that would be frowned upon in a big company. Having said that, big companies will play a key role in certain areas and in partnerships with little companies. Each has its strengths.

I'm a fiscal hawk. I vote against all taxes, but I do believe the environment, and climate change, is a bigger issue than fiscal deficits are as a risk to the nation.

Is it 10 years, 20, 50 before we reach that tipping point where climate change becomes irreversible? Nobody can know. There's clearly a probability distribution. We need to ensure this planet, and we need to do it quickly.

The U.S. has fallen well behind Europe in recognizing climate change and the implications of climate change.

I don't believe - till something radical changes that we are not on track to do - that hybrids are material to climate change. They're fashionable, everybody loves them, the Prius is selling well, but so are Gucci bags. But they don't impact the way the world carries stuff. You know it's a fashion statement.

The winter period between September and March in this country, when land sits fallow and is subject to topsoil loss, we could be enriching the soil and growing all the biomass we need to replace imported gasoline.

Now it will take a long time to scale biofuels, but I'm the only one in the world forecasting oil dropping in price to $35 a barrel by 2030. I'll put it on the record: Oil will not be able to compete with cellulosic biofuels. If you do it from food, the food will get so expensive you can't make fuel out of it.

I challenge anybody to claim that clean tech done right is a disaster.

I do not know what got me interested in technology. What was very clear to me very early on was that I was not interested in religion and that naturally increased my curiosity about science and technology, and I fundamentally believe the two are conflicting.