Therefore, in addition to genetic mutations, environmental mutations should not be underestimated as the factors that determine biological evolution. The impact of alien objects is one of the main causes of environmental mutations, and if it weren't for this meteorite, maybe humans wouldn't have had a chance to come to this planet. Wu Zhongda really gushed when he said, "But meteorites are not exactly a disaster, they can bring abundant iron and water to Planet Glis, and some people even say that the non-human life on Planet Grims may be brought by these meteorites." ”

"Isn't it scary if a meteor falls and each one smashes a hole of this size?"

"I heard there's a meteor shower tonight, right?" Deng Weiwei asked.

"You don't have to risk your life to see meteor showers." Wu Zhongda shook his head.

"Professor, what attitude do we have to use to face the threat of meteorites?" Deng Weiwei asked, with a deep fear in his voice.

"The universe has been generous enough to us, think of the 65 million years that life on the planet Gris has thrived since the extinction of the Gris hominids. But looking at us humans who have only been on this planet for a thousand years, but so far we have become the only creatures capable of self-destruction, between meteorites and humans themselves, what should we be worried about? Wu Zhongda replied solemnly.

"Good!" The director shouted.

He walked up and lit a cigarette for Wu Zhongda.

Xia Chenghao touched his chin and hesitated, should he pretend to be a stranger to say a few words to that Wu Zhongda?

The reunion of the old people is an extremely rare thing, and Fang Yaoqiang may not know that he is talking to such a person. But if you let the organization know, will you think you are going to betray?

Xia Chenghao's face was cloudy, and he couldn't make a decision in his heart for a while.

"Professor Wu. Is Gris hominids really extinct? The director asked.

"Hmm." Wu Zhongda groaned for a while. Shook his head slightly. It's impossible to tell if he's nodding or shaking his head.

"What do you mean, Professor?" The videographer also leaned over and asked, it was rare for him to be in close contact with such a well-known scholar to discuss the problem.

"It's a long time to say, I'm afraid you won't understand, and I'm afraid it will affect your filming program after a long time." Wu Zhongda replied hesitantly.

"No, no, we can record what you say, and we can also add some additions to other programs in the future, which can be regarded as an additional filming plan." The director asks the videographer to set up the lens.

Deng Weiwei also smiled and approached Wu Zhongda with the microphone.

"Grace hominids were first discovered by earth humans about 1,700 years ago. But it was just bones, and at that time people knew very little about biological evolution, and they were mistaken for some kind of non-human intelligent creature on Grims. Wu Zhongda smiled, his wrinkles were deep and dense, full of stories, and the people on the side could listen attentively.

"Anyway, since then, many other fossils of Gris hominids have been found in extraterrestrial exploration, and it has been concluded that these animals are called Glyss hominids." Wu Zhongda said slowly.

"I see." The director nodded.

"About 94 million years ago, Gris hominids suddenly disappeared from this planet, but there are many scientists who do not believe this. It is believed that there must still be Grims hominids in some unknown corner of the planet, but many more believe that Gris hominids have evolved into other species. Wu Zhongda's voice was slow and long. The audience was fascinated too.

"The latest scientific evidence suggests that there is a pygmy eagle that evolved from Golis hominids."

"How did the higher Gris primitives become that kind of alien bird?" Deng Weiwei's eyes widened.

At the time, there were many people who could not accept this hypothesis, but it was certainly scientific and reasonable. This has been confirmed by many experts in human origins, as well as by fossils that have been discovered since then. Wu Zhongda explained with a smile, "There are many different birds in the bird world now, and if you trace the roots, all of these birds evolved a long time ago from a species similar to Gris hominids. ”

"This is probably the homology theory." The director suddenly said a word.

Wu Zhongda looked at him with a smile.

"I once looked at it from a book, but I forgot which book it was." The director said embarrassedly.

Wu Zhongda continued the topic just now: "Regarding the origin of birds and Grace primitive man, some people say that Grace primitive man first survived on the ground, and then had to live in high places because of environmental changes, and then moved among the trees, and there was a landing process in the process of jumping, which slowly turned into gliding, and after hundreds of thousands of years, it learned to fly. ”

Everyone listened carefully, and it was not uncommon to feel everyone's demeanor so closely.

"There are also many similarities between the skeleton of Grimsian and the skeleton of a bird, and there are also commonalities in habits. For example, Grims hominids and birds are oviparous, and we have fossils to prove this. Wu Zhongda continued with the topic just now.

"What? Are humans oviparous? This ......, so birds are the descendants of Gris hominids, so why can't we fly? Deng Weiwei asked curiously.

Wu Zhongda shook his head and smiled, explaining: "This is talking about the primitive humans of Glis, not the primitive humans of the earth. Although this hypothesis is largely conclusive, experts need to accurately reconstruct its evolutionary history and understand the causes of each evolutionary point. For example, when did Gris hominids start jumping from tree to tree, when did they start growing feathers, and so on. ”

"Professor, this is amazing!" Deng Weiwei shook his hands vigorously, as if he was about to fly, and everyone laughed.

"Alright! In short, in order for a person to fly, he first needs feathers. ”

"When will we have it?" The cameraman interjected, and then screamed, it turned out that he was slapped on the back of the head by the director.

"Makes you talk nonsense." Deng Weiwei glanced at him.

"Professor, ignore this uneducated fellow." The director squeezed in, "You continued. ”

Wu Zhongda shook his head and laughed softly before continuing: "I don't know how many human origin experts on the planet Grims have gone to great lengths to find a kind of Grims primitive with feathers. ”

Xia Chenghao walked over slowly, looked down at the ground, and didn't know if he deliberately wanted to avoid his face, and walked straight towards Wu Zhongda.

"Professor Wu?" He asked, convinced that the guru would not have recognized him, for he was very different from his appearance.

"I am! Who are you? Wu Zhongda really didn't recognize this young cleanser student with the first grade. (To be continued.) )