Earth and the other planets of the solar system formed about 4.467 billion years ago from a solar nebula, the mass of disk shaped dust and gas detached from the Sun that was still forming. Initially molten, the outer layer of the Earth cooled to form a solid crust. Later, asteroid impacts have caused [...]

  Climate change is a lasting change (of the decade in a million years) of the statistical parameters (mean parameters, variability) of the global climate of the Earth or its various regional climates. These changes may be due to processes intrinsic to the Earth, external influences or, more recently, human activities. Anthropogenic climate change is [...]

  Protecting the environment is about taking steps to minimize or eliminate the negative impact of human activities on the environment. This action is both scientific because it needs to expand our currently limited knowledge in this field, citizenship, since the decisions have a cost to current generations, and an impact for future generations; because [...]