419 search results
Does counting calories work?
Health, Sports & Psychology

Does counting calories work?

...carbon dioxide exhalations. Scientists know how much energy is used during the metabolic processes that create the carbon dioxide we breathe out, so they can work backwards to deduce that, for example, a human who has exhaled 15 litres of carbon dioxide must have used 94 calories of energy. The facility’s three indirect calorimeters are down the halls from the research...
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Video 5 mins
Killed by Agatha Christie: Strychnine and the detective novel
History & The Arts

Killed by Agatha Christie: Strychnine and the detective novel

...footprints, spies, cheating husbands, cheating wives and other misunderstandings among the red herrings litter the landscape. But in my particular version of fandom, all can be forgiven in admiration of the precise (and elegant) chemistry that underlies the story. The crime comes one summer morning when the household is awakened by “the most alarming sounds” coming...
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Article 5 mins
Challenge: Make paper and ink
Science, Maths & Technology

Challenge: Make paper and ink

...carbonate. Boiling the cellulose in the potassium hydroxide broke down the fibres allowing them to interweave to make paper. Once the fibres had been washed they were then sized (coated) with sticky cherry liquid. This would prevent the ink soaking in like blotting paper. Our scientists made a paper press to squeeze out excess moisture before leaving the sheet to dry in...
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Video 15 mins
Introducing environmental decision making
Nature & Environment

Introducing environmental decision making

...carbon dioxide emissions resulting from my travels. To quantify this impact, I used an ‘Air Travel Calculator’ that I found online. I was surprised to discover that my three journeys produced similar carbon dioxide emissions to a whole year of car use. In 2005, I drove approximately 16,000 kilometres, which produced around three tonnes of carbon dioxide compared to...
View course Introducing environmental decision making
Level 3: Advanced 24 hrs
Effects of pollutants on the aquatic environment
Nature & Environment

Effects of pollutants on the aquatic environment

...carbon that provides nutrients to the animals in the river. But if inadequately treated or in excessive quantities, sewage effluent can seriously damage the plant and animal life of a river by reducing the oxygen content of the water. In extreme cases, where the oxygen content is reduced to zero (or nearly so), the river will support very little life, and will become foul...
View course Effects of pollutants on the aquatic environment
Level 3: Advanced 3 hrs
Five missing kings and queens – and where we might find them
History & The Arts

Five missing kings and queens – and where we might find them

...carbon dating failed, isotopic tests confirmed that the remains were indeed Eadgyth’s. But what’s puzzling is that not all of Eadgyth was actually in the lead casket: her hands and feet were nowhere to be found and most of the skull was missing. What happened to these? Experts at the time of the exhumation suggested that thieves had struck in search of holy relics –...
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Article 10 mins
What is Planetary Protection?
Science, Maths & Technology

What is Planetary Protection?

...carbon-rich asteroids, gas giant planets and some of their moons, some dwarf planets and Kuiper Belt objects III Flyby, orbiter Mars, Europa (moon of Jupiter), Enceladus (moon of Saturn) IV Lander Mars, Europa, Enceladus V ‘Restricted Earth return’ - Mars, Europa, Enceladus V ‘Unrestricted Earth return’ - Venus, Moon If the target body is of interest to the...
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Article 5 mins
Making social media work in Higher Education
Education & Development

Making social media work in Higher Education

...footprint can develop and take steps to avoid this understand how academic misconduct can arise through social media and how to avoid this...Session 4: Understanding risk and boundaries in the online environment: 1 The risks and potential negative impact of social media - For many students, social media can be a positive space to connect to peers and explore the world of...
View course Making social media work in Higher Education
Level 1: Introductory 8 hrs