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Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why does everything look flat even though the Earth is round? – Zayden, age 11, Corona, California Ever since the ancient Greeks first made observations of the circular Moon and the skies, scientists have known that the Earth is a sphere. We’ve all seen beautiful images of the Earth from space, some photographed by astronauts and others collected remotely by orbiting satellites. So why doesn’t our planet look round when we’re standing in a park or looking out a window? The answer is all about perspective. Humans are pretty tiny creatures living on a really large sphere. An average adult is between 5 feet and 6 feet 6 inches tall (1.5 to 2 meters), and kids are smaller. Imagine you’re a circus acrobat s...

Macron, Biden, Modi, Lula, Scholz and von der Leyen are just some of the global leaders who are not participating in COP29 in Baku.

Over 260 thousand citizens of the European Union have signed a petition addressed to the European Commission, expressly asking the EU executive to give political priority to reducing the use of pesticides.The petition, the result of a growing movement in favor of environmental sustainability, was supported by numerous environmental organizations and associations active in the sector of environmental protection and agriculture, but also by many public health experts and biologists.There are three fundamental objectives at the center of the instance:reintroducing pesticide reduction into EU policy, reinstating ambitious targets for sustainable food production systems and protecting public health and the environment.The fight against the massive use of pesticides is therefore reinvigorated, an increasingly crucial aspect for the protection of the ecosystem and public health, put at risk by an intensive agricultural model considered, on a large scale, no longer sustainable in the long term...

Much of the media and politics spoke of "pogroms" and "Jew hunts" regarding the violence in Amsterdam.Things are different.

UN estimates at the opening of COP29.Babayev:“We are heading towards climate ruin”