In the 1990s, Lockheed envisioned an aircraft so massive it needed Airbus and Boeing to build it. Explore the story of the ...

Africa is often synonymous with its drylands that cover two-thirds of the continent. Relief is brought through rainfall ...

The African Humid Period exemplifies the dramatic climate transitions that our planet experiences as a result of subtle changes in the Earth's orbit. The "greening" of the Sahara not only ...

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Sahara’s climate is famously unforgiving, with daytime temperatures reaching up to 58C, while nighttime temperatures can plummet to -6C. Interestingly, though, despite its scorching reputation ...

The year is marked by changes in the weather, ecology, and amount of daylight, and these changes result from earth's orbit around the sun and earth's axial tilt relative to the ecliptic plane.