Denis Hayes Quotes
There was almost a universal acceptance of unhealthy conditions. Sulfur dioxide in smokestack emissions were the price, or smell, of prosperity.
Listen up, you couch potatoes: each recycled beer can saves enough electricity to run a television for three hours.
I feel more confident than ever that the power to save the planet rests with the individual consumer.
By the year 2000, such renewable energy sources could provide 40 percent of the global energy budget; by 2025, humanity could obtain 75 percent of its energy from solar resources.
When civilization stands at the edge of a cliff, a step forward doesn't make much sense.
We presently have the technology ... fuel cells, solar cells, hydrogen ... the opportunities are amazing for clean energy.
These are not exhortations from overwrought extremists, but carefully phrased warnings from some of the world's finest scientists.
I suppose I'd characterize myself as having a faith-based optimism. My faith is parental and Darwinian.
An acre of windy prairie could produce between $4,000 and 10,000 worth of electricity per year - which is far more than the value of the land's crop of corn or wheat.
We've made some heroic efforts, but the Earth as a whole is in worse shape today than 30 years ago, ... There's been 30 more years of greenhouses gases, species extinctions and population growth.
When we held the first Earth Day, everyone said it was a success because of the huge turnout. It was probably the largest planned event across the country.
Zeroes are important. A million seconds ago was last week. A billion seconds ago, Richard Nixon resigned the presidency. A trillion seconds ago was 30,000 BC, and early humans were using stone tools.
There really wasn't an environmental movement 30 years ago. The Sierra Club national office in 1969 consisted of one full-time volunteer.
The sunshine that strikes American roads each year contains more energy than all the fossil fuels used by the entire world.