Researchers discover fluorescent frog
Fluorescence is “unprecedented” in amphibians but a team of researchers in Argentina has discovered that the South American polka dot tree frog that is actually fluorescent.
The tree frog dubbed Hypsiboas punctatus initially appeared ordinary, but when the researchers shed an ultraviolet light on it, they were surprised to find that it is really fluorescent. The creature glows bright blue-green.
It means that the creature’s skin absorbs short-wavelength electromagnetic radiation and then reemits at longer wavelength.
Study co-author Norberto Peporine Lopes, a chemist at University of Sao Paulo, said, “Three molecules — hyloin-L1, hyloin-L2 and hyloin-G1 — in the animals' lymph tissue, skin and glandular secretions were responsible for the green fluorescence.”
The researchers further explained that the fluorescence contributes 18-29 per cent of the total emerging light in twilight as well as nocturnal scenarios, enhancing brightness of the creatures and matching their sensitivity of night vision.
The discovery of the fluorescent frog was described in the most recent edition of the Proceedings of the National Academy of Sciences.
French President Emmanuel Macron invited the U.S. President Donald Trump for Bastille Day celebrations. The White House has confirmed that President Trump will be travel to France next for the event.
Global markets registered strong start for the week with oil prices recovering and Italian banks supporting European indices. Italian authorities said that they are ready to spend 17 billion Euros to deal with closure of two big banks in Italy.
An AirAsia flight returned to Perth 90 minutes after takeoff due to single engine failure. The flight for Kuala Lumpur returned due to technical issue and landed safely in Perth at 10 am.
Microsoft has confirmed that some part of Windows 10 source code has leaked online. Some of the leaked source code was posted to Beta Archive this week. Beta Archive website keeps track of Microsoft Windows releases.
Google will stop scanning content of emails in future for serving advertisements to users based on content of their emails. Google has been criticized for this controversial advertising technique by privacy advocates.
Austrian government’s plan to offer Euro 1,000 to migrants to return home has found limited number of takers. As per Interior Ministry data, 427 migrants have accepted the offer.