0:00:00 > 0:00:13Those teams need to
0:00:13 > 0:00:13Hello again.
0:00:13 > 0:00:16It's Monday, I'm Jenny, live with your first Newsround update.
0:00:16 > 0:00:16Coming up:
0:00:16 > 0:00:19The red planet rover touching down after a 400 million mile journey.
0:00:19 > 0:00:23Plus, Ayshah goes on the hunt for a rare type of toad.
0:00:23 > 0:00:25But first, hundreds of thousands of people have taken to
0:00:25 > 0:00:33the streets to ask world leaders to do more to protect the environment.
0:00:33 > 0:00:36More than 10,000 people, including the Nanny McPhee actress Emma
0:00:36 > 0:00:39Thompson, turned out in London for a special march to urge countries
0:00:39 > 0:00:41around the globe to cut the amount of harmful gases they produce.
0:00:41 > 0:00:44It was one of more than 2,000 marches planned
0:00:44 > 0:00:46for the start of United Nations talks later this week.
0:00:46 > 0:01:23Hollywood actor Leonardo DiCaprio has been asked to speak
0:01:23 > 0:01:26Next to Mars, and the US Space Agency mission that hit the Red
0:01:26 > 0:01:28Planet's orbit just a few hours ago.
0:01:28 > 0:01:30NASA? Maven craft has been whizzing through space for
0:01:30 > 0:01:33the past ten months, travelling more than 442 million miles from Earth.
0:01:33 > 0:01:35The Maven had to slow down enough to allow the gravity
0:01:35 > 0:01:36on Mars to grab it.
0:01:36 > 0:01:39Once the spacecraft is in position on the planet it will
0:01:39 > 0:01:48spend the next year investigating why Mars is so dry.
0:01:48 > 0:01:50Now, when you think of endangered species, you usually
0:01:50 > 0:01:52think of pandas and tigers.
0:01:52 > 0:01:54But scientists in Scotland are worried about another type
0:01:54 > 0:02:01of creature, natterjack toads.
0:02:01 > 0:02:03Their numbers are falling, and researchers are looking into
0:02:03 > 0:02:04new ways to make sure they survive.
0:02:04 > 0:02:29We sent Ayshah on a mission to track down the slimy rare amphibians.
0:02:29 > 0:02:41I am looking for natterjack toads.
0:02:41 > 0:02:49Their numbers have been falling.
0:02:49 > 0:02:58The best time to spot them is at night.
0:02:58 > 0:03:13Let's look.
0:03:13 > 0:03:31We couldn't spot a single toad.
0:03:31 > 0:03:44Once found, they are measured and photographed.
0:03:44 > 0:03:54The line is different on every toad.
0:03:54 > 0:04:03Time for me to hop off.
0:04:03 > 0:04:05And sticking with animals, let's have more
0:04:05 > 0:04:06I am looking for natterjack toads.
0:04:06 > 0:04:11of your scary spider stories after the news that we'll be seeing
0:04:11 > 0:04:14Experts say we can expect a "good spider season" because of the
0:04:14 > 0:04:16recent mild weather, which has meant there are more
0:04:16 > 0:04:17insects for the spiders to eat.
0:04:17 > 0:04:21And that's prompted loads of you to tell us about your spider sightings
0:04:21 > 0:04:24over on the website Abigail said, ?I saw a giant spider in my room
0:04:24 > 0:04:27and I couldn't sleep till my mum had thrown it out of the window.?
0:04:27 > 0:04:29Emily from Birmingham saw four spiders in three days.
0:04:29 > 0:04:31She said one was bigger than her hand!
0:04:31 > 0:04:34Melly from London said, ?I've seen loads in my garden and
0:04:34 > 0:04:35in the corner of the room.
0:04:35 > 0:04:36I hate spiders!?
0:04:36 > 0:04:38That's all we've got time for, Newsround's back right here
0:04:38 > 0:04:44at 8.15am.
0:04:44 > 0:04:58Find out about the kids swimming with David Walliams.
0:04:58 > 0:05:07I am a bad loser, and someone overtook me!
0:05:07 > 0:05:07It has been fun.