Energy trades could help resolve Nile conflict
Scientists have shed light on a new, transformative approach that could help resolve a dispute over the Nile river's water resources.
Scientists have shed light on a new, transformative approach that could help resolve a dispute over the Nile river's water resources.
Environment
Apr 26, 2024
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The gentle roar of the ocean lulled Indian mother-of-two Banita Behra to sleep each night, until one day the encroaching tide reached her doorstep.
Environment
Apr 26, 2024
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25
The collapse of key ecosystems would severely harm the global economy, researchers have warned. Researchers from UCL's Institute for Innovation and Public Purpose (IIPP) and the Global Systems Institute at the University ...
Economics & Business
Apr 25, 2024
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3
Silicon Valley venture capitalist Marc Andreessen penned a 5,000-word manifesto in 2023 that gave a full-throated call for unrestricted technological progress to boost markets, broaden energy production, improve education ...
Economics & Business
Apr 25, 2024
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Groundwater withdrawals are expected to peak in about one-third of the world's basins by 2050, potentially triggering significant trade and agriculture shifts, a new analysis finds.
Earth Sciences
Apr 25, 2024
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Researchers in North Carolina have created a simulation model to analyze how coastal management activities meant to protect barrier islands from sea-level rise can disrupt the natural processes that are keeping barrier islands ...
Earth Sciences
Apr 24, 2024
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The United Nations said Wednesday it was launching a new Climate Resilience Fund aimed at boosting protections for "refugees and displaced communities" threatened by climate change.
Environment
Apr 24, 2024
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Much like how electric circuits use components to control electronic signals, quantum networks rely on special components and nodes to transfer quantum information between different points, forming the foundation for building ...
Optics & Photonics
Apr 24, 2024
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AMOLF researchers, in collaboration with Delft University of Technology, have succeeded in bringing light waves to a halt by deforming the two-dimensional photonic crystal that contains them. The researchers show that even ...
Optics & Photonics
Apr 24, 2024
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In physics, energy (from the Greek ἐνέργεια - energeia, "activity, operation", from ἐνεργός - energos, "active, working") is a scalar physical quantity that describes the amount of work that can be performed by a force, an attribute of objects and systems that is subject to a conservation law. Different forms of energy include kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy. The forms of energy are often named after a related force.
Any form of energy can be transformed into another form, but the total energy always remains the same. This principle, the conservation of energy, was first postulated in the early 19th century, and applies to any isolated system. According to Noether's theorem, the conservation of energy is a consequence of the fact that the laws of physics do not change over time.
Although the total energy of a system does not change with time, its value may depend on the frame of reference. For example, a seated passenger in a moving airplane has zero kinetic energy relative to the airplane, but non-zero kinetic energy relative to the Earth.
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