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Sperm counts article icon

Nature & Environment 

Sperm counts

Getting to grips with the numbers behind the man's part of the reproductive system. THIS ARTICLE CONTAINS FRANK DISCUSSION OF SEXUAL AND REPRODUCTIVE SCIENCE

Article
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Introducing the environment: Ecology and ecosystems free course icon Level 1 icon

Nature & Environment 

Introducing the environment: Ecology and ecosystems

What is ecology and why is it important to our understanding of the world around us? This free course, Introducing the environment: Ecology and ecosystems, looks at how we can study ecosystems to explore the effect that humans are having on the environment.

Free course
5 hrs
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Eutrophication free course icon Level 2 icon

Nature & Environment 

Eutrophication

Managing eutrophication is a key element in maintaining the earths biodiversity. Eutrophication is a process mostly associated with human activity whereby ecosystems accumulate minerals. This free course, Eutrophication, explains how this process occurs, what its effects on different types of habitat are, and how it might be managed.

Free course
12 hrs
Aquatic mammals free course icon Level 1 icon

Nature & Environment 

Aquatic mammals

Mammals come in a bewildering variety of shapes and sizes and yet all of the 4700 or so species have some characteristics in common, which justifies the inclusion of diverse types within a single group. Although mammals evolved on land, a number of species have become adapted to spending part or all of their lives in water and it is these mammals that you are going to concentrate on in this course. You will meet some aquatic mammals, find out how we can study them, consider their evolutionary history and read about human impacts on one iconic group.

Free course
5 hrs
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Satellite observations reveal a dynamic Arctic under a changing climate article icon

Nature & Environment 

Satellite observations reveal a dynamic Arctic under a changing climate

Earth is changing rapidly. Satellites play a crucial role in monitoring these changes. Dr. Kadmiel Maseyk explores what they have detected...

Article
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Nature & Environment 

Blue Planet II

Sir David Attenborough presents Blue Planet II.

TV Programme