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A new study is challenging whether pot smoking during adolescence could really lead to decline in intelligence. Smoking marijuana could be linked to something else that is behind a brainpower effect reported in some past studies, as per the study published in the Proceedings of the National Academy of Sciences.

Joshua Isen, a psychology lecturer at Loyola Marymount University in Los Angeles and an author of the new study, said that the other factor is not known yet, “But an adolescent at risk for smoking pot is probably going to show this IQ drop regardless of whether he or she is actually smoking marijuana”.

The CDC has issued a travel alert for pregnant women who are planning a visit to Zika virus-affected countries in the Americas. The leading national public health institute of the US says the rare virus, which is transmitted by mosquitoes, could be a threat for travelling pregnant women.

The CDC telling women to postpone their trips to 14 countries: Brazil, El Salvador, Colombia, Guatemala, French Guiana, Honduras, Panama, Haiti, Mexico, Suriname, Paraguay, Martinique, Puerto Rico and Venezuela.

The number of early deaths due to dialysis and kidney transplants has reduced, according to a recent annual report released by the United States Renal Data System (USRDS). The reduction has been attributed to advanced treatment techniques and alternatives that have reduced the complexities associated with kidney problems. The trends revealed by the report are both positive and negative. The report also revealed that 17,600 kidney transplants had been performed by 2013.

A potent neurotoxin, called domoic acid, continues to affect the marine food web, as per reports. Last year, the neurotoxin was found causing longest-lasting algal bloom. Experts are baffled because months have passed, but the domoic acid is still persisting in Dungeness crab.

Now, UC Santa Cruz Professor Raphael Kudela has come up with an explanation on neurotoxin's effect on Dungeness crab. The professor of Ocean Science explained how it all happened and what to expect next.

A latest research published in The Astrophysical Journal Letters has shown that the universe’s most luminous galaxy is at threat of tearing itself. Known as W2246-0526, the galaxy is present at a distance of 12.4 billion light-years from Earth. It is so consumed by turmoil that it is facing danger of ejecting its entire supply of star-forming gas.

The team made the discovery using cutting-edge technology in Chile’s Atacama Desert, and the repercussions of their efforts are significant as it can shed some light on the fate of both W2246-0526 and galaxies in general.

The remnants of a mammoth that was knocked down nearly 45,000 years back have revealed the earliest known proof of human beings in the Arctic.

Discovered in far northern Russia, marks on the bones have indicated that the creature was butchered and stabbed. The way the tip of a tusk was spoiled suggested some human activity, probably to create ivory tools.

The estimated age of 45,000 years or more of the discovery has extended the record of human presence in the Arctic by more than nearly 5,000 years.