Giant flying reptile ruled ancient Transylvania

New research suggests that a giant pterosaur -- a toothless flying reptile with a 10 metre wingspan -- may have been the dominant predator in ancient Romania according to Science daily.

Palaeontologists examined the creature's unusual gigantic neck vertebra and believe it was a formidable carnivore and major predator that terrorised dinosaurs and other prehistoric animals of Cretaceous-age Transylvania. It provides the first evidence of large predatory animals in the region at that time.

'Curiosity' exposes low CO2 level in Mars' primitive atmosphere

The CO2 level in Mars' primitive atmosphere 3.5 billion years ago was too low for sediments, such as those found, to be deposited. This and other conclusions are drawn from a paper written with the participation of researchers according to Science daily.

The area Curiosity has been analysing since 2012 is composed primarily of sedimentary sequences deposited at the bottom of a lake 3.5 billion years ago. These sediments contain various secondary minerals, such as clays or sulphates, which indicate that the primitive surface was in contact with liquid water.

What happened to the sun over 7,000 years ago?

An international team led by researchers, has identified a new type of solar event and dated it to the year 5480 BC; they did this by measuring carbon-14 levels in tree rings, which reflect the effects of cosmic radiation on the atmosphere at the time. They have also proposed causes of this event, thereby extending knowledge of how the sun behaves according to Science daily.

When the activity of the sun changes, it has direct effects on the earth. For example, when the sun is relatively inactive, the amount of a type of carbon called carbon-14 increases in the earth's atmosphere. Because carbon in the air is absorbed by trees, carbon-14 levels in tree rings actually reflect solar activity and unusual solar events in the past.

'Startling' Dinosaur Protein Discovery

Ancient proteins dating back 195 million years have been found inside a dinosaur bone according to BBC.

The discovery pushes back the oldest evidence for preserved proteins by 100 million years.

Scientists have also found traces of a mineral that probably came from the blood of the early Jurassic dinosaur.

Soft tissues provide new insights into the biology of dinosaurs and how they evolved.

They are rarely preserved during the process of fossilisation, during which bones and teeth are slowly transformed into "rock".

Scientists find 'oldest human ancestor'

Researchers have discovered the earliest known ancestor of humans - along with a vast range of other species according to BBC.

They say that fossilised traces of the 540-million-year-old creature are "exquisitely well preserved".

The microscopic sea animal is the earliest known step on the evolutionary path that led to fish and - eventually - to humans.