For one night, a glimpse into a Silicon Valley run by women

The effort to bring some measure of gender balance to Silicon Valley took a decidedly trashy turn last week.

The event was the awards ceremony for the Technovation Challenge, a global afterschool program, funded by the nonprofit Iridescent, which promotes and encourages girls ages 10 to 18 to pursue an interest in technology. On Thursday, the finalists gathered in San Francisco to present applications they developed to solve problems in their communities.

The winners for both the high school and middle school competitions each designed apps that make it easier for people to dispose of waste – in Nigeria and India, respectively.