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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.

Saturn’s rings are one of the jewels of the solar system, but it seems that their time is short and their existence fleeting.

A new study suggests the rings are between 400 million and 100 million years old – a fraction of the age of the solar system. This means we are just lucky to be living in an age when the giant planet has its magnificent rings. Research also reveals that they could be gone in another 100 million years.

The rings were first observed in 1610 by the astronomer Galileo Galilei who, owing to the resolution limits of his telescope, initially described them as two smaller planets on each side of Saturn’s main orb, apparently in physical contact with it.

In the past two decades, children have become more obese and have developed obesity at a younger age. A 2020 report found that 14.7 million children and adolescents in the U.S. live with obesity.

Because obesity is a known risk factor for serious health problems, its rapid increase during the COVID-19 pandemic raised alarms.

For years, many have feared that artificial intelligence (AI) will take over national security mechanisms, leading to human slavery, domination of human society and perhaps the annihilation of humans. One way of killing humans is medical misdiagnosis, so it seems reasonable to examine the performance of ChatGPT, the AI chatbot that is taking the world by storm. This is timely in light of ChatGPT’s recent remarkable performance in passing the US medical licensing exam.