Confidence votes 45. They can easily smell a whale carcass 20 miles away or seals up to 6' beneath the snow and ice. This will depend on whether the animal is dead, which way the wind is going, if it is under the ice, if the polar bear can smell well, etc. Mike Adams.
This procedure applies light energy from a laser onto a varicose vein. The laser light makes the vein fade away. Laser surgery is mostly used to treat smaller varicose veins. No cutting or injection of chemicals is involved.
Ultrasound is used to visualize the varicose vein. A laser fiber or radiofrequency electrode is advanced to the desired location within the vein. Laser or radiofrequency energy is then applied, heating the vessel and causing it to close. Following the procedure, the faulty vein will shrink and scar down..