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The frosty air of winter can be invigorating. But cold air can also pose threats to your health, whether you’re indoors or outside. If your body temperature drops too low, it can lead to a serious, sometimes deadly condition known as hypothermia. Learn to recognize the signs of this condition, and take steps to keep yourself and your family warm and safe during this chilly season.

A harmful algal bloom (HAB) occurs when toxin-producing algae grow excessively in a body of water. Algae are microscopic organisms that live in aquatic environments and use photosynthesis to produce energy from sunlight, just like plants. The excessive algal growth, or algal bloom, becomes visible to the naked eye and can be green, blue-green, red, or brown, depending on the type of algae.