Flames of the Simi Valley Fire ravage a mountain side in Southern California. - [Image courtesy - Dennis W. Goff / Wikimedia Commons]
Pastoruri glacier in central Peru in the Cordillera Blanca. - [Image courtesy – Edubucher / Wikimedia Commons]
1 of 2

Photogallery - Global warming is a serious matter, first announced by a NASA scientist 30 years ago