Latest posts
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How Methane Leaks Are Found From Orbit
Methane is a strong but short-lived greenhouse gas, and a small number of large sources account for a large share of emissions. Satellites are beginning to make those sources individually visible.
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Why Nuclear Plants Cost So Much to Build
Nuclear generation has low fuel cost and high capital cost. Most of the difficulty is not the reactor physics but the construction, qualification and financing of a very large, very tightly specified project.
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What Solid-State Batteries Promise and What Blocks Them
Replacing the liquid electrolyte with a solid should improve safety and energy density. The obstacle is that solids must maintain contact with electrodes that keep changing shape.
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How Vaccines Are Manufactured at Scale
Making a vaccine in a laboratory and making hundreds of millions of doses are different problems. The second is dominated by process control, contamination risk and supply chains.
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What Biodiversity Monitoring Actually Measures
Biodiversity is not a single number. Monitoring programmes measure proxies — counts, cover, sequences — and each proxy captures a different part of what the word means.
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What a Fusion Reactor Needs Beyond Confined Plasma
Holding a plasma hot enough to fuse is one problem. A power plant also has to breed its own fuel, survive neutron bombardment and turn that into electricity continuously.
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Why Electronic Waste Is Difficult to Recycle Well
Electronics contain valuable metals in small amounts, bonded into complex assemblies. Recovering them means defeating the design decisions that made the product work.
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What Quantum Sensors Measure and Why They Matter
Quantum sensing uses the sensitivity of quantum states to their environment to measure things. It is quieter than quantum computing and closer to practical use.
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Why Invasive Species Are Harder to Control Than They Look
Removing an unwanted species sounds straightforward. It usually fails because the population is replenished faster than it can be removed, and because the cause of its success remains.
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Why Rare Earth Elements Are Hard to Substitute or Recycle
Rare earths are not especially rare in the ground. They are difficult because they occur together, separate reluctantly, and are used in small quantities that are awkward to recover.