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Articles on Radiation

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Advances in radiotherapy involve combining new technologies with clinical expertise. Kateryna Kon/Science Photo Library via Getty Images

Radiation therapy takes advantage of cancer’s poor DNA repair abilities – an oncologist and physicist explain how

Radiotherapy takes many forms: from directing powerful high-energy beams toward specific areas of the body to placing radioactive seeds right next to tumors.
Public health measures such as vaccine and mask mandates, lockdowns and school closures have been widely discussed in scientific and popular media. THE CANADIAN PRESS/Lars Hagberg

Public health errors: Why it’s crucial to understand what they are before assessing COVID-19 responses

As the COVID-19 pandemic fades, we may debate whether public health responses could have been better. But first we need to understand what public health errors are — and are not.
The Zaporizhzhia Nuclear Power Plant seen across the Dnieper River, which was receding after a downstream dam was destroyed. Photo by Carl Court/Getty Images

Kakhovka dam breach raises risk for Zaporizhzhia nuclear plant – receding waters narrow options for cooling

The International Atomic Energy Agency says the plant has enough water to last for several months. What happens afterward or if the remaining water is lost to the war could lead to a disaster.
Watching a solar eclipse is always fascinating. During the phase when the moon completely obstructs the sun, daylight gives way to a deep twilight sky. (Shutterstock)

On April 8, 2024, parts of Ontario, Québec, the Maritimes and Newfoundland will see a total eclipse of the sun. Here’s how to get ready for it.

Some parts of North America will witness a total solar eclipse in April 2024. This may seem far away, but you should think about preparing for this rare and fascinating phenomenon.
The last operating reactor at the Zaporizhzhia Nuclear Power Plant, reactor No. 6, has been safely shut down. Xinhua News Agency via Getty Images

Cold shutdown reduces risk of disaster at Zaporizhzhia nuclear plant – but combat around spent fuel still poses a threat

The power plant’s sixth reactor has been shut down, all but eliminating the risk of a nuclear meltdown. But fighting at the site could still release radioactive material.

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