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Many travellers feel nervous when they go through the large body scanners at airport security because they worry about getting exposed to harmful radiation. A common misconception is that these machines are like giant X-ray machines that could potentially harm you. In reality, modern airport scanners do not use X-rays at all. Instead, they use a highly

When we think about treating cancer, we often think of chemotherapy, radiation thera­py or surgery. But another powerful method doctors are using is heat. This technique, known as microwave ablation, is becoming more popular for treating tumours, especially in the liver, lungs and kidneys. Just like a microwave oven heats up food, doctors use a thin,