Climate conditions affecting the planet continue to develop since the first Earth Day was celebrated in 1970. CBS News' David Schechter breaks down the newest challenges the Earth is facing.

Now celebrating its 55th anniversary, this year's Earth Day theme, "Our Power, Our Planet," calls for people worldwide to unite behind renewable energy and promote clean electricity by 2030, according to Sarah Davies, the communications director of EarthDay.org.

While the Earth Day movement has helped raise awareness about human-amplified climate change and has led to some regulatory actions, 5 1/2 decades later, the planet continues to warm at an alarming rate,