Tonsil stones, also known as tonsilloliths, are calcium debris deposits that form on the tonsils. While tonsil stones are usually not a health concern, they are often an indication of poor oral ...
A global study of lavas from volcanic hot spots suggests that contrary to accepted wisdom, Earth’s deep mantle may have the ...
Icebergs and other glacial fragments regularly wash up on Iceland's southern Diamond Beach, making the sandy strip look like ...