The Sustainable LA Grand Challenge held Sandpit 2020, engaging faculty from diverse disciplines in collaborative thinking in pursuit of innovative research ideas to address pressing challenges. A team of 10 UCLA professors earned a $956,000 award for Heat Resilient L.A., a project that will over the next two years determine where and when people moving around the city are most vulnerable to the effects of extreme heat — a problem being caused by climate change — and assess which communities most need cooling interventions.