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Australian scientists said on Friday that saltwater crocodiles can rest with their one eye open to watch for prey or threat. According to a research, it was revealed that mammal's half brain could be conscious even if it is asleep.

Saltwater crocodiles are widely found in northern Australia and they weigh approximately more than a tonne and can grow up to seven metres long.

Michael Kelly, lead author of La Trobe University, told reporters, "Birds like to sleep like humans, with both eyes closed, but when they feel threatened they'll have one eye open and they'll orientate that eye towards the threat. And the crocodiles were behaving in this way as well".

Researchers have built an insect-sized robot that can both swim and fly. The robot has the capability to hang around and dive. Robot bee is the insect-size robot, which can make way for upcoming dual functions aquatic and aerial vehicles.

To create such a robot it needed two conflicting designs, aquatic and aerial vehicles. To fly in the air robot requires insect-like wings that can generate an upward lift and to float under water, it requires small surface area to lessen drag.

Researchers at Harvard John A. Paulson School of Engineering and Applied Science (SEAS) were able to merge both the designs and created Robbie, the first ever robot that can fly as well as swim under water.

The University of Florida researchers have found a type of deep-sea bacteria that can neutralize large quantities of carbon dioxide in the atmosphere. In a statement released by the University of Florida, researchers have said that the bacterium called Thiomicrospira crunogena yields an enzyme carbonic anhydrase that is helpful in removing carbon dioxide from organisms.

As per the Environmental Protection Agency, carbon dioxide is main greenhouse gas that is emitted as a result of human activities. Carbonic anhydrase can work to break down the carbon dioxide only in extreme temperatures and pressures.

Researchers will be able to understand mysterious 're-ionization epoch' in the universe with the help of earliest galaxies. On the basis of data collected by the NASA/ESA Hubble Space Telescope, a team of astronomers has found 252 faint dwarf galaxies within three distant galaxy clusters.

NASA's Hubble space telescope has observed some of the earliest galaxies that were present in the universe some 600 million years after the Big Bang. The energetic electromagnetic radiation, including ultraviolet light released by them reionized the neutral hydrogen atoms, and cleared the fog due to which light could travel to the vast universe corners.

The guttural calls of howler monkeys reverberate across Central and South American rainforests, and they possess a secret that the males of the species may want to be left unrevealed. Howler monkeys come among the ones who make the loudest, deepest sounds of any land animal. The male monkeys use their roars for attracting the ladies for mating and intimidate other males.

But on Thursday, scientists said that they have found a curious paradox. They have discovered that the males making the lowest-frequency calls are considered to be the most attractive to potential mates. They are endowed with the lowest reproductive potential.

During the study, researchers focused on a cup-shaped bone, the hyoid, present above the larynx that forms a resonating chamber to amplify vocalizations.

The 65 year old New York City’s Bus Terminal is all set to be replaced and revamped though the alternate plan has not yet been made public. The decision has been given in-principle approval.

The Board of Commissioners of the Port Authority of New York and New Jersey gave a go ahead for the proposal of replacing the Terminal in the Times Square neighborhood. The final layout plan for the new terminal will be made public during the international design competition in 2016.

However, the project will take at least 10 years to take off and will involve an expense ranging from $7.5 billion to $10.5 billion.

"This is a giant step forward for one of the most important transportation projects in the country, and certainly in our region," Commissioner Ken Lipper said.