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Antiviral drugs are generally considered to be a 20th century invention. But recent research has uncovered an unexpected facet to your immune system: It can synthesize its own antiviral molecules in response to viral infections.

My laboratory studies a protein that makes these natural antiviral molecules. Far from a modern human invention, nature evolved cells to make their own “drugs” as the earliest defense against viruses.

The Victorian government, like many governments around the world, has announced new regulations on short-stay accommodation. The government says Victoria has more than 36,000 short-stay places, which are reducing the number of homes available for long-term rental.

Other states have capped the number of nights a dwelling can be used for short-stay accommodation. The Victorian response has been to introduce a levy set at 7.5% of the short-stay platform’s revenue.

What if nearly everything that’s been written about this month’s Intergenerational Report is wrong?

I’ll explain. But first, here’s a sample of the headlines: “Young Australians at risk of a poorer future”, “Fewer workers to shoulder soaring income tax”, “Ageing population driving $140 billion blowout in spending”, and so on.

Losing weight is challenging. But as anyone who has ever successfully lost weight knows, it’s avoiding weight re-gain that’s the real challenge.

This is true no matter what method you follow to lose weight. For example, studies show that people who follow very low calorie diets (between 800-1,200 calories per day) regain between 26% and 121% of their lost weight five years after treatment. People who follow behavioural weight management programs (such as WW, formerly Weight Watchers) regain between 30-35% of their lost weight after one year.

Even tech experts have been astonished by the recent, rapid growth of AI technology, able to hold human-like conversations in multiple languages, create music and pass medical exams. While the potential benefits of AI in fields such as healthcare are indeed inspiring, the pace of change is rapid, and there is still lots of uncertainty about the future.

Rachel Carson, who launched the modern environmental movement with her 1962 book “Silent Spring,” was a highly private person. But on one occasion she allowed an interviewer to ask, “What do you eat?” Her sardonic answer: “Chlorinated hydrocarbons like everyone else.”

Carson was referring to a family of chemicals used for insect control that included DDT, the principal target of her book. Even though Carson tragically died of cancer just 18 months after publication of “Silent Spring,” her best-seller had powerful and lasting effects. Congress moved to create a new federal Environmental Protection Agency in 1970, and two years later that agency banned DDT for agricultural use.