Yet more evidence that Leonardo DiCaprio, arguably Hollywood’s most attractive green ambassador, lives by his word. The actor, in Boston with Martin Scorsese filming Shutter Island, just bought a Hudson River–facing apartment at Riverhouse, an ecofriendly Battery Park City development that’s been LEED-certified gold (the second-highest rating for green buildings). He was spotted numerous times arriving at the site’s sales office on his bike. It’s a great fit for DiCaprio, one of the first megawatt celebrities to go green: The builders will use only non-pollutant materials and finishes, and residents will be provided with twice-filtered air and solar-powered energy. The do-gooding Action Center to End World Hunger has already signed up for a ground-floor retail space in the building. Through his publicist, DiCaprio, who’s executive-producing the upcoming Discovery Channel series Eco-Town, would only say this: “Riverhouse is a prime example of how green technology is both accessible and achievable for new residential developments—it is a groundbreaking building.”