Solved: How the ‘Monstrous’ Iguanas of the Bahamas Got So Darn Big

The secret’s in the seabirds.

An endangered subspecies of iguana called the Allen Cays rock iguana has drawn John Iverson, a biology professor from Earlham College in Indiana, to the Exumas for the past four decades. These iguanas were once confined to just two islands, Leaf Cay and U Cay, but by the late 1990s Iverson noticed some had spread to nearby islands, especially Allen Cay. The simple explanation was that winds and currents had whisked baby iguanas across the 300-foot-wide channel separating Leaf and Allen Cays. There was just one problem: The iguanas on Allen Cay were relative giants, twice as long and six times as heavy as their counterparts on other islands. Read more.

Dark Matter Detector Observes Radioactive Decay of Xenon-124

A process that takes more than one trillion years, the age of the universe has been measured by researchers. The researchers used an instrument that is built to search for black matter (the most elusive particle that's known to man!).  An international team from the XENON Collaboration made public their observation of the radioactive decay of a substance that is called xenon-124, a form of an isotope, of the element xenon - a colorless, dense but odorless noble gas that’s found in trace on the Earth’s atmosphere. Read more.

Scientists Find One Billion Year Old Fungi, Earth’s Oldest

Scientists recently found one billion-year-old fungi in Canada, changing the way we view evolution and the timing of plants and animals here on Earth. The fossilized specimen was collected in Canada’s Arctic by an international team and later identified to be the oldest fungi ever found, sitting somewhere between 900 million and 1 billion years old. The research changes how we view eukaryotes colonizing the land. Read more.

Hyperactive comets may hold key to Earth sea mystery

New measurements may explain isotope ratio differences between ice in comets and water in oceans.

A class of comets that behave in a way that contradicts the equations that best describe them could hold the key to the origin of Earth’s water, researchers suggest. Read more.