90-159x300SARA BLACK
Professional photographer, renewable energy advocate

1. Develop energy consciousness.

Every time I plug a device or appliance into a wall socket or every time I flick a switch—these actions consume energy. Fewer unnecessary actions mean less wastage. I try to conserve power as much as I can.

Read more: 10 things you and I can do for climate change


Satellite image of U.S. storm, Dec. 28, 2015. Photo credit: NASA/NOAA GOES2015 featured some of the most significant climate milestones in human history. From record-high temperatures, to atmosphericconcentrations of carbon dioxide not seen in a million years or more, to a landmark international agreement to limit global warming, no other year has seen such a stark contrast of climate indicators. Each milestone provides perspective on how far we’ve come, where we are today and what the future might hold.

Read more: Climate Milestones of 2015: The Good, the Bad and the Signs to Watch


By area affected, this year's El Nino is larger than the 1997-98 monster event, NASA says. Photo: NASA

There were many photographs that encapsulated the past year of weather extremes of fierce heatwaves, dangerous floods and wild winds but perhaps the most telling is a computer-colored satellite image from space.

Read more: El Niño: The weather of 2015 captured in one image


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