There's never been a better time than now to start or accelerate a greentech venture.

Ideas are easy. Execution is everything. It takes a team to win.

Your biggest challenge will be building a great team.

Better biofuels are a really big deal. That means we can precisely engineer the molecules in the fuel chain and optimize them along the way. So, if all goes well, they're going to have designer bugs in warm vats that are eating and digesting sugars to excrete better biofuels. I guess that's better living through bugs.

We all know about blogs and how big they are.

The great danger of dealing with venture capitalists is the 'slow maybe'.

People are looking to have more meaning in their lives. It is a sign the technology community is coming of age.

It is quite clear that compelling content, which is made available on economic terms that respect the intellectual rights of owners, can be a tremendous spur to the growth of broadband networks.

There's this large trend - I think the next trend in the Web, sort of Web 2.0 - which is to have users really express, offer, and market their own content, their own persona, their identity.

Green-tech could be the largest economic opportunity of the 21st Century.

Act now. Act with speed.

If we don't embrace a low carbon economy this decade, it won't just harm the planet, but also the U.S. economy.