Michael Sheen hopes 'extraordinary' reaction to toxic waste documentary spurs action

Dozens of people contacted BBC Wales following coverage of Sheen's investigation into chemical giant Monsanto.

Related stories

science

Concerns raised over impact of quad bikes on wildlife

science

Anguish stalks Nepal flood survivors whose loved ones were swept away

science

How to watch the partial lunar eclipse from Northern Ireland

science

Dozens of US and Canadian citizens missing after flash flooding in Nepal