It's been a year since the ALS Ice Bucket Challenge [1] took over your social feeds for a good cause, and now the organization is bringing back the charitable trend with the hashtag #EveryAugustUntilACure. Renée Zellweger [2] is the latest celebrity to support the campaign, dumping ice-cold water over herself in support of her friend Nanci Ryder [3] and nominating pals Eddie Redmayne and Colin Firth [4]. Watch her drought-conscious video, and then check out all the other stars who have participated in the Ice Bucket Challenge [5].