Category Archives: Life on Earth

Watch: How to tell if a planet harbors life?

Are we alone in the universe? Or are there any other “living planets” other than Earth? Until 1992, we even don’t know if there are any other planets around the other stars or not. In 1992, two Swiss astrophysicists, Michel Mayor and Didier Queloz the first “exoplanet” (planet around other star than Sun). Then discoveries continued. Especially after the launch of Kepler space telescope on March 7, 2009, which is a space observatory launched by NASA to discover Earth-size planets orbiting other stars, we quickly learned that our Solar System is not a rare phenomenon at all. As of November 2017, scientists have confirmed more than 3,500 exoplanets in more than 2,700 star systems. Now, the question is: are any of these planets (or the planets waiting to be discovered in the future) harbor life? If so, how we can find out? How to tell if a planet harbors life?
Continue reading Watch: How to tell if a planet harbors life?

Watch: Our Living Planet From Space

Life makes Earth unique among the thousands of other planets we’ve discovered so far – there may be extraterrestrial life, or maybe notNotes 1, but it is the only “living planet” that we know of. Since 1997Notes 2, NASA satellites have continuously observed all plant life at the surface of the land and ocean. This view of life from space is furthering knowledge of our home planet, and how it’s changing.

In the Northern Hemisphere, ecosystems wake in the spring, taking in carbon dioxide and exhaling oxygen as they sprout leaves – and a fleet of Earth-observing satellites track the spread of vegetation. Meanwhile, in the oceans, microscopic plants drift through sunlit surface waters blooming into billions of carbon-dioxide-absorbing, oxygen-producing organisms – and satellites map the swirls of their color.
Continue reading Watch: Our Living Planet From Space

20 Amazing Crocodile Facts

Crocodiles are aquatic reptiles, and among the most feared carnivores on Earth, because of their size, big powerful jaws and aggressiveness. They are so successful predators – once they were living alongside the dinosaurs. After the Chicxulub impact, which happened around 66 million years ago, the non-avian dinosaurs were gone but crocodiles were managed to survive. Here are top 20 amazing crocodile facts about these fascinating beasts.
Continue reading 20 Amazing Crocodile Facts

Blue Planet II – The Prequel by BBC

On September 27, BBC has published the prequel of “Blue Planet II”. Like “The Blue Planet”, which was premiered on 12 September 2001, it is narrated by Sir David Attenborough, the English broadcaster and naturalist. The exclusive track developed by the German composer and record producer Hans Zimmer and the English rock band Radiohead.
Continue reading Blue Planet II – The Prequel by BBC

Top 15 Largest Bird Species

Birds (Aves) range in size and weight from the 5 cm (2 in) and 1.6-2 grams bee hummingbird to the 2.75 m (9 ft) and 104-156 kg (229-344 lbs) ostrich. Here are the top 15 largest bird species (by body weight).

Birds form one of six basic animal groups, with the others being amphibians, fish, invertebrates, mammals and reptiles. They are endothermic vertebrates, characterized by feathers, toothless beaked jaws, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. They reproduce by laying of hard-shelled eggs (eggs fertilize inside the female). The fossil record indicates that birds are the last surviving group of dinosaurs. So, they are also termed avian dinosaurs.
Continue reading Top 15 Largest Bird Species

Top 10 Largest Crocodiles Ever Recorded

Crocodiles (subfamily Crocodylinae) or true crocodiles are large aquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. Although they are big, they suffer from a prevalence of “big fish” stories and over-exaggeration. In the Internet age, photographs of crocodiles manipulated digitally to make the animal look much larger than it is. But how big are they actually? Here are the top five ten largest crocodiles ever recorded (when I wrote the post, I didn’t know about Gomek; and after I published it, the Guinness World Record book has accepted a claim that a 23 ft/7.01 meters male saltwater crocodile weighing 2,000 kg lives within Bhitarkanika Park in the state of Orissa, India).
Continue reading Top 10 Largest Crocodiles Ever Recorded

Largest dinosaurs ever lived

Identifying the largest dinosaurs ever lived isn’t an easy task, because it’s very rare to unearth a complete fossil. Furthermore, only a tiny percentage of these amazing animals ever fossilized, and most of these “lucky” bodies will remain buried underground forever. So, we may never know exactly what dinosaur was the biggest (or the tiniest) ever.

Despite this fact, size always has been one of the most interesting aspects of these prehistoric animals. There are extreme variations in their size, from the tiny hummingbirds, which can weigh as little as three grams, to the titanosaurs, which could weigh as much as 70 tonnes, or even more.

Here are some of the largest dinosaurs ever lived.
Continue reading Largest dinosaurs ever lived

Man Who Befriended a Great White Shark – Not a True Story

In the last few years, a series of photos circulating over the Internet via email and online, showing close encounters between a man and a great white shark. The sites who publish these photos (and sometimes PowerPoint presentations) claim that an Australian fisherman named Arnold Pointer once freed a great white shark from a fishing net, and the shark has followed him around ever since.
Continue reading Man Who Befriended a Great White Shark – Not a True Story

Dinosaur-killer asteroid hit “worst possible place”, say Scientists

According to the scientists who drilled into the Chicxulub crater buried underneath the Yucatán Peninsula and the Gulf of Mexico, the famous dinosaur-killer asteroid hit the “worst possible place”. They summarized their findings so far in a BBC Two documentary titled The Day The Dinosaurs Died. The documentary presented by professors Alice Roberts and Ben Garod.
Continue reading Dinosaur-killer asteroid hit “worst possible place”, say Scientists