On April 22, 1970, millions of Americans came together to celebrate the first Earth Day.
On that first Earth Day, Nelson, 53, spoke to a larger than expected crowd in Denver, Colorado.
And 40 years ago, when Gaylord conceived and celebrated the first Earth Day, the world looked pretty different.
America rose to meet the call to action in the months and years that followed the first Earth Day.
About 20 million Americans participated in the first Earth Day, organizers said, though that number is most likely inflated.
The picture became inextricably linked to the environmental movement when it was adopted for the first Earth Day in 1970.
Smith says the plant extinctions that have occurred since the first Earth Summit in 1992 have all been entirely avoidable.
Two years later, at the first Earth Day, its founder predicted that the greatest challenge to the environment would be population growth.
Wall says the event, as well as the Soviets launching the first Earth-orbiting satellite four years before, could have been just what the U.S needed.
Los Angeles, California (CNN) -- There were several speeches at the first Earth Day -- back in 1970, before the disco era -- on the National Mall.
These threats, so much more severe than in 1992 when Rio hosted its first Earth Summit, require that we act now to make sustainability disclosure a global norm.
FORBES: A Tipping Point on Sustainability Disclosure in Rio?
Just a day after announcing the discovery of the first Earth-size planets ever detected outside our Solar System, scientists have confirmed the existence of two even smaller worlds.
Over the 40 years since the first Earth Day, there have been many laws, and through the vision of a few companies and leaders, progress has been made in the profitability of sustainability.
FORBES: How "Going Green" Has Changed From Tree Hugging to Profitability
Even if I wasn't as cool and thoughtful as I hoped to appear, the first Earth Day's message was good then, and it's better today: We have to take care of the Earth.
In 1969, the year before the first Earth Day, two environmental disasters grabbed the country's attention: a massive oil spill coated the coast of Santa Barbara, California, and the Cuyahoga River in Cleveland, Ohio, grew so polluted that it actually caught fire.
But the fact that rocky planets can take shape around metal-poor stars means the first roughly Earth-like worlds may have formed long, long ago.
The first Rio Earth Summit in 1992 called for nations to find ways to conserve fish stocks and prevent international conflicts over fishing on the high seas.
Look no further than Laika, the first animal to orbit Earth, soon becoming the first animal to die in orbit, not too long after achieving that earlier distinction.
America was the first nation on Earth to comprehensively declare equality for its citizens with disabilities.
WHITEHOUSE: 20th Anniversary of the Americans with Disabilities Act
They called themselves Earth First or more jokingly The Strawberry Liberation Front or even Mindless Thugs Against Genetic Engineering.
His first sensation of Earth was the smell of spring after landing in the Kazakh steppe on Tuesday, he said.
If the claim is true, this is the first place beyond Earth known to have been favorable for organic life.
He hopes these may resemble the ancient beings that first lived on earth without oxygen and in a boiling primordial soup.
Its ancestral genus Mionictis, first roamed the Earth around 30m years ago.
The Penn State team carried out the largest genetic study so far of when land plants and fungi first appeared on Earth in an attempt to resolve this debate.
Cherenkov telescopes such as the Hess array in Namibia or the Magic facility in the Canary Islands catch this process directly from the atmosphere when the particles first arrive at Earth.
We have been social creatures from our first steps on earth, but my sons will grow up in a world where they can actively participate in events around the globe, as they occur.
FORBES: Social Media: How my childhood heroes led me to a life in social media
Shalene Flanagan set an American record earlier this year, and interestingly enough, in the early '70s, her mother was the first woman on Earth to run under two hours and 50 minutes in a marathon.
应用推荐