Hello everyone.

I'm Allison Chinchar instead of Koya Weir, and you're watching CNN 10.

Today is Monday, September 21st.

Let's move on to the news.

Let's start with South Africa, where officials are trying to address a problem at the intersection of public safety and conservation.

Packs of baboons are roaming Cape Town neighborhoods, damaging property and making residents fear for their safety.

CNN's Larry Madowo explains the controversial plan to solve this problem.

Cape Town residents are increasingly paying attention to the controversy over baboons and what to do with them.

Packs of baboons roam the streets, looting houses and annoying residents.

These Chakma baboons are the largest species of monkey in South Africa.

And as the city expands, the conflict between baboons and residents intensifies .

Now the city has a plan to solve this primate problem.

To permanently imprison about 60 animals in cages as an alternative to shooting.

And we are faced with two very difficult decisions.

We can either shoot the packs, which is perhaps an ecological solution , or find a place where we can create an urban wildlife center and allow these animals to live there in proper conditions.

But this plan has sparked protests and fierce debate.

Should we imprison baboons that have adapted to city life?

Should humans find a way to coexist with them?

Sue Ann Norton says she regularly feeds fruit to the baboons that come to her house.

Are n't they dangerous?

They treat you the way you treat them.

If you treat them with anger and force, they respond with force.

If you treat them like pets, like cats or dogs, like I do, then we live in harmony.

City officials say the baboons will be better off if they are confined to a confined space.

These are no longer wild baboons.

They live in an urban area, and what they're going to get, whether we like it or not, is a better life for 30 years.

Animal rights groups say the root of the problem is not baboons, but urbanization.

They argue that residents should better protect their homes, trash cans, and block access to food.

If you live in an area where there is wildlife, you have to coexist with it.

As residents take to the streets in protest, the fight for Cape Town's baboons boils down to one question.

Can humans and wildlife share the city, or will one have to give way to the other?

Activists in Kathmandu, Nepal, held a silent protest and lit candles this weekend, demanding stronger action from the world on climate change.

The country is still recovering from the collapse of a glacier in late August, which caused catastrophic flooding .

It claimed the lives of over 1,300 people, with thousands more missing.

During the event, activists honored the memory of the victims.

One of the demonstrators spoke about the reasons why he decided to participate.

This is not a protest.

We are silently trying to draw the attention of the crowd and the public to climate change and how it is affecting Nepal, despite its meager contribution; Nepal emits only 0.027% of global carbon emissions, but we get all the climate-related dangers.

And we, the youth, are here to express solidarity with the people who lost their lives in the floods in Rasuva-Bhotekoshi.

Time for a 10-second quiz.

In which US state was the first fossilized skeleton of a Tyrannosaurus found?

Montana, Wyoming, South Dakota or New Mexico ?

If you answered " Montana", raise your hands.

The first Tyrannosaurus fossil was discovered in 1902 in Montana.

In 1905, the dinosaur was officially named Tyrannosaurus Rex, which means "king-mouth-tyrant." For decades, scientists have debated whether Tyrannosaurus rex was like a cold-blooded lizard or a warm-blooded bird.

Now they may finally have an answer.

Researchers from the University of California studied the chemical composition of three fossilized Tyrannosaurus teeth and found that the dinosaur's body temperature was about 36°C, which is surprisingly close to ours.

This higher body temperature suggests that Tyrannosaurus could produce and maintain its own heat, which helps explain how this massive predator could live in a wide variety of climates, including places as far north as modern-day Alaska.

So, although tyrannosaurs disappeared about 66 million years ago, scientists continue to find new facts about their lives.

Tomorrow is the autumnal equinox in the northern hemisphere , and many of us are noticing that Mother Nature is starting to show her talent.

Autumn colors are becoming brighter, with trees beginning to turn rich shades of yellow, red, and orange.

But have you ever wondered why and how we get this colorful spectacle every year?

Koy and I went for a walk to discuss the science behind this dazzling spectacle.

orange.

Have you ever wondered why and how leaves change color?

Who better to ask than our CNN meteorologist , our weather wizard, Allison Chinchar.

Very glad to see you.

You have a wonderful, " autumn" look with your decor today.

Speaking of beauty, how do these leaves change color?

Why do they change color?

And how do they know when to start?

That's right, because sometimes they change a little later in the year than other times.

So, yes, there are a lot of factors here , Koi.

But the most important thing is the length of daylight.

When the days get shorter and there is less daylight left before winter, it is actually a signal for them to stop photosynthesis.

Photosynthesis is essentially the use of sunlight to produce food and energy.

But in the winter months, this process slows down incredibly.

So trees don't die, they just go into dormancy.

Why do some leaves turn red, like this one ?

True.

Not all trees have a special gift that allows them to acquire such a beautiful color.

Essentially, inside them there is a substance called anthocyanin , which allows these trees, when they slow down photosynthesis in winter, to acquire this beautiful red or sometimes even a beautiful purple color thanks to this special ingredient.

But this also requires appropriate weather conditions.

You need to make sure there was enough moisture before the start of autumn, as well as plenty of sunlight.

Why do some trees not change color and nothing falls from them?

True.

These are what we call evergreen trees, hence the name.

In essence, these trees have evolved to never stop the process of photosynthesis.

In winter, it slows down significantly, but stops completely , so they don't need to shed their leaves or change their color.

With the global warming we are seeing today, how might rising global temperatures affect leaf color changes?

True.

The most obvious answer is that the leaves will fall much later because the heat lasts longer.

If trees could choose ideal conditions, they would choose a gradual decrease in temperature, as you and I probably do.

But if the temperature drops too quickly, say 10–20 degrees in just a couple of days, the trees can experience what's called shock, causing them to simply drop their leaves without even having time to completely change color.

So why do trees decide to shed their leaves?

Is this a kind of means of survival, something they are forced to do?

This is necessary to save a lot of energy that the tree would have spent during the winter.

Many people don't know, but the leaves absorb the vast majority of the moisture that the tree consumes.

So , if the leaves are gone , the tree can accumulate a lot of energy to survive the harsh winter.

Thank you for helping us delve into this interesting topic today.

Today's story deserves a 10 out of 10.

A training program in Minneapolis that aims to help more women become firefighters.

We want to encourage women to go beyond simply meeting standards.

We want them to break through glass ceilings.

We want them to come and prove that they deserve this place, because that's what it is.

According to the National Fire Protection Association, only 9% of firefighters in the country are women.

And the instructors of this program are trying to fight the stereotype that women are not able to withstand physical exertion.

When they call 911, they are calling for help on the worst day of their lives, and you need to be physically prepared to save them.

The work of a firefighter is extremely physically demanding, and we must be prepared for it.

You are literally doing this to save lives.

Your physical fitness and training can determine whether a person survives.

Step by step, these women prove that the desire to help people is one of the most heroic acts.

Okay, superstars, I only have time for one greeting today.

It's for Miss Little from the Juvenile Detention Center in Bon Air, Virginia.

Thank you very much for subscribing to our YouTube channel, keep up the good work .

I hope you all have a wonderful day.

Koy will get back to you tomorrow.

I'm Allison Chinchar and this is CNN 10.