Last fall, Google launched Project 10^100 — a global call for world-changing ideas that help as many people as possible. After over 150,000 submissions from more than 170 countries, 16 inspired finalists emerged and The Big G handed it over to us the people to cull the top 5 who will enter an RFP process and hash it out for the grand funding.

And today, October 8, is the last chance we the people have to cast our votes for ideas that range from fighting for a positive media depiction of scientists, to free online education, to a global genocide monitoring and alert system.

So go ahead, take a look at the contenders and make yourself heard. It may sound like a pageant line, but we are indeed the world — our actions and choices drive its direction, so if Google is willing to put some money into something good, we better make sure it’s the best possible. Vote now.