410 search results

Could we control our climate? Badge icon
Science, Maths & Technology

Could we control our climate?

...carbon dioxide (CO2) gas from activities such as burning fossil fuels, which enhances the greenhouse effect and warms the planet...Session 1: What is ‘engineering the climate’?: 1.2 Modifying the Earth’s energy budget - Geoengineering techniques aim to modify Earth’s ‘energy budget’. The energy budget is similar to a financial budget. If your income is greater...
Level 1: Introductory 24 hrs
Financial methods in environmental decisions
Nature & Environment

Financial methods in environmental decisions

...carbon dioxide and other emissions – assuming that the householder uses less heating fuel. Cash outflows are the costs and expenses (whether capital or revenue in nature) incurred to implement and run a project. Cash inflows are the benefits that a project is expected to provide. In this context, any savings or reductions in costs resulting from a project, which are in...
Introducing environment
Nature & Environment

Introducing environment

...carbon shopping habits are taking a heavy toll on the environment. Your Co2 emissions from shopping: Medium How best intentions are often undermined by the pressures of modern living. Your Co2 emissions from shopping: Low How to reduce your fossil fuel use; it isn't easy but can be very rewarding. Greening social housing A look at the council's plans to improve the energy...
What do the latest pictures of Pluto tell us?
Science, Maths & Technology

What do the latest pictures of Pluto tell us?

...carbon monoxide) that make up the pale terrain of Tombaugh Regio. At the very low temperatures on Pluto’s surface (-225°) water-ice is as strong as rock on Earth. [Detail of part of the western edge of Tombaugh Regio. Image is 470km across.] The landscape in the left third of this image is composed of water-ice. The very flat terrain in the right third, which is part...
Trees: local heroes in the fight against global climate change
Nature & Environment

Trees: local heroes in the fight against global climate change

...carbon storage, water interception, and air quality improvement. Take the UK and Ireland as an example: over 172 million kilograms (172 000 tonnes) of carbon dioxide is stored in just over a million trees surveyed by citizen volunteers, relating to annual economic savings of nearly £11 million (Treezilla, 2022). With an estimated 1.5 billion urban trees in the UK, the...
Ade Thomas - Earth in Vision
Nature & Environment

Ade Thomas - Earth in Vision

...carbon economy, we’ve been very good at documenting that over time, and that’s a good story. I’m quite confident that we may move towards a zero carbon economy and Green.TV’s archive will be there to communicate that. The biodiversity story is another one which I think we are perhaps losing the … losing out on. What is Green.TV doing now? Projects that we’ve...
Can renewable energy sources power the world? Badge icon
Science, Maths & Technology

Can renewable energy sources power the world?

...carbon dioxide from burning fossil fuels. It’s now widely accepted that the world needs to phase out fossil fuels and phase in low and zero carbon energy sources such as renewables. We follow this with an overview of the main solar and non-solar based renewals. We then look at current European and UK targets for increasing the share of renewables in the energy mix by...
Minerals and the crystalline state
Science, Maths & Technology

Minerals and the crystalline state

...carbon, each atom is covalently bonded to four other carbon atoms, arranged at the corners of a tetrahedron (Figure 19a). The resulting structure, which has a repeating cubic shape, is illustrated in Figure 19b. The structure contains much more unoccupied space than do close-packed metal structures. Figure 19 The diamond structure: (a) tetrahedral arrangement of covalent...
Level 2: Intermediate 10 hrs