Marks created by an unknown creature have been discovered on the floor at the deepest level of Lake Mashuko in the town of Teshikaga, Hokkaido. A 30-centimeter-long ruler is shown to compare the size of the traces. The picture was taken in August 2014. (Provided by a joint research by The Asahi Shimbun and National Institute for Environmental Studies)
Hunt on for mystery creature after 'footprints' found on bottom of Lake Mashuko
TESHIKAGA, Hokkaido--A mystery creature is lurking at the bottom of Lake Mashuko here and a team of researchers is determined to hunt it down.
Researchers find Japanese macaques can differentiate “zero” from other numbers. (Asahi Shimbun file photo)
Scientists isolate monkey neurons that react to concept of 'zero'
SENDAI--Researchers here have found neurons in the brains of Japanese macaques that can differentiate “zero” from other numbers, a concept that may explain why humans perceive being naught as special.
Tiny plankton from the Pacific Ocean collected using nets with webbing of 0.1 millimeter (Provided by Christian Sardet of France's CNRS)
Scientists calculate existence of massive trove of plankton species in oceans
The world’s oceans contain a far more extensive diversity of microorganisms than previously thought, a global research team reported on May 22.
The Asahi Shimbun
Scientists say mysterious ancient plate used for Korean board game
NARA--An early eighth-century pottery plate unearthed here 26 years ago was likely used for a traditional Korean board game, indicating close cultural exchanges between ancient Japan and the Korean Peninsula, researchers said.
A Japanese bush warbler (Provided by the National Museum of Nature and Science)
Japanese bush warblers in Hawaii pitching a different tune
Japanese song birds introduced decades ago to Hawaii evolved to chirp simpler tunes than native bush warblers in Japan, possibly because breeding competition there is less fierce, research shows.
View of the Sun Yat-sen Univerisity in Guangzhou city, south Chinas Guangdong Province. (AP file photo)
First experiment 'editing' human embryos ignites ethical furor
NEW YORK--Biologists in China reported carrying out the first experiment to alter the DNA of human embryos, igniting an outcry from scientists who warn against altering the human genome in a way that could last for generations.
A student at Azabu University in Kanagawa Prefecture gazes at a dog during an experiment on the effect of eye-to-eye contact between humans and another species. (Provided by Mikako Mimura)
Love is in the eyes between dogs and owners, say scientists
Making eyes at your dog leads to more than mere puppy love.
A finding in killifish could lead to an explanation on why humans get jealous. (Asahi Shimbun file photo)
Scientists: Hormone gives killifish that loving feeling
Researchers identified a hormone that gives male killifish the edge needed to vanquish rivals in love, a discovery that could shed light on the neural mechanisms of jealousy and possessiveness in humans.
A fossil of Pakicetus, the whale’s terrestrial ancestor, top, and a fossilized Remingtonocetus, a primitive whale that led a life mainly in the ocean (Provided by Takushi Kishida)
Study: Whales lost ability to sense smells, tastes while shifting from land to sea
KYOTO--The senses of smell and taste of the ancestor of whales took a massive hit when it moved from land to the sea tens of millions of years ago, researchers in Kyoto have found.
Nishinoshima island south of Tokyo on March 4 (Asahi Shimbun file photo)
Monitoring system to track seismic activity around Ogasawara islet
A research team has installed six measuring devices on the seafloor near the volcanic Nishinoshima island south of Tokyo to monitor earthquakes and tsunami around the islet.
Haruko Obokata, the scientist behind the STAP cell scandal, speaks at a news conference in Tokyo in April. (Asahi Shimbun file photo)
Riken closes curtain on STAP cell scandal, but mystery lingers
Riken, a leading research institute, wrapped up its investigation into a scandal that cut short the career of a high-flying stem cell scientist without getting to the bottom of the debacle that had promised a breakthrough in regenerative medicine.
The aurora borealis is seen in the northern sky during the early hours of March 18 from the Kita Subaru observatory in Nayoro, Hokkaido. (Provided by the Nayoro city-run Kita Subaru observatory)
1st aurora borealis in Japan in a decade observed from Hokkaido observatory
NAYORO, Hokkaido--A faintly red aurora borealis appeared in the night sky here March 18, the first time in a decade that nature's light show has been observed in Japan.
A Yoshino cherry tree standing next to the statue of Prince Komatsu Akihito in Tokyo's Ueno Park is speculated to be the first of the species that is nowadays seen widely across Japan. (Teruhiko Nose)
Botanists link origin of Yoshino cherry blossoms to Ueno Park tree
The majority of sakura trees that will bloom across Japan in a few weeks may have derived from one standing in Tokyo's Ueno Park, according to scientists at Chiba University.
A female Papilio polytes variety of swallowtail butterfly mimics wing patterns of the harmful Pachliopta aristolochiae variety (Provided by the University of Tokyo)
Japanese team IDs gene behind 'intimidating' mimicry by swallowtail butterflies
Japanese researchers have unscrambled the genetic mechanism behind the mimetic behavior of female swallowtail butterflies, which evolve to resemble harmful varieties to avoid being preyed upon.
The Asahi Shimbun
Is there life on a Saturn moon? Research team says probably
We may not be alone in the universe after all, and our neighbors may be closer than you think.
An illustration of the new species of iguanodontia, named Koshisaurus katsuyama, that was discovered in 2008 in Katsuyama, Fukui Prefecture (Provided by the Fukui Prefectural Dinosaur Museum)
Fukui researchers’ discovery recognized as new dinosaur species
KATSUYAMA, Fukui Prefecture--Fossilized remains found here seven years ago have been recognized as a new species of iguanodontia, a herbivorous dinosaur that lived during the Cretaceous Period, the prefectural dinosaur museum reported on March 10.
Kinki University's nuclear reactor in Higashi-Osaka, Osaka Prefecture, had been used by other universities for practical training. (Tatsuyuki Kobori)
FOUR YEARS AFTER: There's a price to pay for university research reactor shutdowns
University research reactors were not exempt from the shutdowns of nuclear reactors that the central government ordered after the 2011 earthquake and tsunami that triggered the nuclear crisis in Fukushima Prefecture.
An artist's rendition of the deep-sea manned submersible Shinkai 12000 (Provided by Japan Agency for Marine-Earth Science and Technology)
Manned submersible being developed that reach deepest point of world's oceans
YOKOSUKA, Kanagawa Prefecture--A deep-sea manned submersible that can reach the deepest ocean depths is being developed in Japan to survey untapped riches of the seafloor.
The lunar rover developed by the Hakuto research team (Asahi Shimbun file photo)
Japanese team to launch lunar rover in 2016 for Google competition
A Japanese private-sector team plans to launch an unmanned rover to the moon next year in an international competition offering $30 million (3.5 billion yen) in prize money.
A female conger spotted garden eel (Heteroconger hassi) lays her eggs at 12:11 a.m. on April 20, 2014. (Provided by the Sumida Aquarium)
Tokyo aquarium scores a world first with footage of conger species laying eggs
An aquarium in Tokyo’s Sumida Ward captured the first video footage ever of conger eels laying eggs, a feat that expands greatly on the knowledge of the little-understood sand-dwelling species.

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