Many are ready, when listening to the inventor, to belittle and deny his achievements so that he will no longer be heard in honourable places, but after some months or a year, they use the inventor's words in speech or writing or design.

Do not share your inventions with many; share them only with the few who understand and love the sciences.

The environmental movement does not always have to be about stopping things. It can be about fixing problems.

Emissions of greenhouse gases warm the planet, altering the carbon and water cycles. A warmer ocean stores more heat, providing more fuel for hurricanes. A warmer atmosphere holds more water, bringing dangerous deluges. Rising sea levels threaten coastal zones.

To those who have always wondered how they might best serve the wider world, wildlife conservation is, at its core, one of the purest forms of giving.

Beyond the borders of wealthy countries like the United States, in developing countries where most people in the world live, the impacts of climate change are much more deadly, from the growing desertification of Africa to the threats of rising sea levels and the submersion of small island nations.