The first ever SustainaVille Week, featuring an "urban wild" festival, a barbecue and U.N.-style climate talks, takes place April 22 to 28. Other events include the annual spring cleanup, a presentation about Somerville's efforts to reach carbon neutrality by 2050, environmental story time for kids, a poster making contest, a film screening, and more. Find events at somervillema.gov/sustainaville and at the SustainaVille Facebook page and blog.