This great blue-green ball.
We live on it, and it sustains us: The Earth. It's impressive and inspiring - and not without threats.
The Perseid meteor shower is as regular as clockwork. It peaks August 12, same as last year. This time we can expect to see twice as many shooting stars, perhaps even a "double peak." But there's loads we don't know.
The IPCC's report on land use and climate change adds another perspective, or piece of the puzzle, to understanding what humans are doing to the planet and how we might be able to limit our damage to the Earth. Barron Josef Orr is a lead scientist for the United Nations Convention to Combat Desertification, one of the groups that requested the IPCC's report on climate change and land.
A new artists' residency programme has just been launched by Science Gallery Venice. It's called Earth Water Sky and, over the next three years, it will be pairing all kinds of artists with environmental scientists from Venice's University of Ca' Foscari. Can scientists inspire artists and artists inspire scientists? And can they connect to tackle climate change? Dany Mitzman reports.
During his years in South America, many of Alexander von Humboldt's most poignant moments happened in the "Avenue of the Volcanoes" in Ecuador. Going against the grain, his measurements there led to new geological insights about the way volcanic events shape the face of the Earth.