Articles tagged as "Nutrient cycles"
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Interviews with scientists - Omega-3
Omega-3 fatty acids are vital for human health. But how can we source them sustainably? Professor Johnathan Napier of Rothamstead Research talks about the role that Omega-3 fatty acids play in our diets, how we currently source them from algae via fish, and how he hopes to use genetic engineering to breed plants that produce these molecules in their oils.
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Interviews with scientists - feeding sub-Saharan Africa
This 5-minute video interview with Professor Giles Oldroyd offers a thought-provoking take on the topic of fertilisers and nitrogen fixation. In the west, we’ve spent 50 years relying on increasing food yields by adding nitrogen-based fertilisers to the soils. But it’s not an approach that seems to be working for the millions of smallholder farmers across western and central Africa.
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Broad beans are quick and reliable to germinate in the lab, and an excellent example for topics including nutrient cycles, nitrogen fixation and mutualism.
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These algae make a great resource for demonstrating photosynthesis, particularly with the 'algal balls' activity.
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Mung beans are cheap, reliable and easy to germinate, and offer a useful way to look at topics including plant growth, cells, plant nutrition and hydroponics.
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Duckweed make excellent subjects for students to use to develop investigations.
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Video demo - Investigations with Venus' Fly Traps
In this activity, perfect for STEM science clubs, students investigate what causes a Venus' Fly Trap to shut its trap. These experiments are related to a series of investigations that Darwin carried out as part of his work on evolution and adaptation. A great activity for science clubs.