A hole in the heart is a nonmedical term for a type of congenital heart defect. There are many types of holes in the heart, and most are present from birth. Around 1% of babies born in the United ...
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A mathematician says black holes could be cut and pasted into a wormhole
Black holes are usually framed as the ultimate dead ends of the universe, but a new mathematical proposal suggests they might instead be raw material for building shortcuts through spacetime. In this ...
A macular hole is when an opening forms in the middle of the light-sensitive tissue at the back of the eye. It can lead to people having a blurry or black spot in the center of their vision. The ...
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