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DID YOU KNOW? There are around 800 lymph nodes in the average adult body

YOUR IMMUNE SYSTEM EXPLAINED

Meet the cells and organs that make up your immune system. Discover how it keeps deadly invaders at bay and what happens when it gets out of control WORDS SCOTT DUTFIELD

DID YOU KNOW?

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Issue 175
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WELCOME
WELCOME
Issue 175 “Your immune system saves your life
REGULARS
Underwater pests
These aquatic parasites weave themselves into the bodies
Martian crater deposits
In the northern hemisphere of Mars is Arabia
Southern sea lions
A colony of South American sea lions (Otaria
Inside a dwarf galaxy
The James Webb Space Telescope has peered into
Earth’s mantle has a gooey layer
Showcasing the incredible world we live in
HUBBLE SPOTS GALAXIES ABOUT TO COLLIDE
Three galaxies in the constellation of Boötes imaged
The first UK child to receive gene therapy for a fatal disorder is ‘happy and healthy’
A 19-month-old girl named Teddi recently became the
Earth-sized exoplanet spotted just 72 light years away
An artist’s rendering of HD 219134 b, another
16-METRE-LONG BOOK OF THE DEAD PAPYRUS IS DISCOVERED
An illustration from the Papyrus of Ani, which
The world’s deadliest mushroom conquered California with a clone army
The death cap mushroom is a small, green-tinged
NASA SPIES A ‘TEDDY BEAR’ IN MARTIAN ROCKS
A cracked hillside on Mars looks just like
Invading queen bees are taken down by rival workers
A new study has shown that free-roaming queen
Scans of the ‘golden boy’ mummy reveal 49 hidden amulets
A series of images from the study, including
AI is deciphering a 2,000-year-old text
Alexander the Great, pictured here in a mosaic
Fatal ‘brain-eating’ amoeba successfully treated
A drug for urinary tract infections may also
EUROPE’S JUPITER EXPLORER ARRIVES AT THE SPACEPORT
The ESA’s Jupiter Icy Moons Explorer (JUICE) spacecraft
WISH LIST
Thelatesttechfor THEOUTDOORS
Does it ever snow in Antarctica?
Antarctica has an amazing climate. The coldest temperature
WHY AREN’T FEET MEASURED IN CENTIMETRES OR INCHES?
Feet, like any other part of our body,
WHY AREN’T BUTTERFLIES BORN AS BUTTERFLIES?
Nature has given butterflies the best adaptations not
WHAT IS A SHORT CIRCUIT?
People usually say ‘short circuit’ to mean any
Are Komodo dragons venomous?
© Getty Did you know? Komodo dragons grow
HOW DO FLOWERS PRODUCE A SCENT, AND WHAT’S IT MADE OF?
Flowers produce scents via specialised glands located in
WHY IS BLUE-GREEN ALGAE DANGEROUS?
Blue-green algae can be dangerous when they produce
How long were sabretoothed tigers’ teeth?
Sabre-toothed tigers were actually sabre-toothed cats, or Smilodon,
WHY DO RATS HAVE SUCH BAD TEETH?
Rats do not necessarily have bad teeth. However,
WHY DOES EARTH HAVE AIR?
Earth has a key ingredient for life: water.
What was the Parthenon in Athens used for?
The Parthenon is the name given to the
WHAT IS DANDRUFF?
Dandruff is when dead skin cells fall off
What’s the biggest shark, and is it the most dangerous?
The biggest shark in the world, reaching lengths
WHAT IS THE ARCHAEOLOGICAL SITE PETRA?
Petra is the name of the ancient city
WHAT IS CHAOS THEORY?
Chaos theory is a mathematical way to study
How do stalactites form?
Stalactites form by deposition of various minerals held
DID LADY GODIVA RIDE NAKED THROUGH THE STREETS OF COVENTRY?
© Getty Ben Ashford Despite being entrenched in
THE INDESTRUCTIBLE TOM CREAN
THE TALE OF AN UNSUNG HERO’S ADVENTURES AT THE SOUTH POLE
THIRTY TRILLION CELLS
HOW YOUR BODY REALLY WORKS
KING CHARLES
THE STORY OF BRITAIN’S NEW MONARCH
NURSERY EARTH
THE LIVES OF BABY ANIMALS AND THE WAYS THEY SHAPE OUR WORLD
HUMAN 2.0
A CELEBRATION OF HUMAN BIONICS
MAKE A BEE HOTEL
With these materials, you can help solitary bees find a place to call home
EXPANDING UNIVERSE
Dear HIW, I know that the universe is constantly expanding, but I don’t understand how this works. Can you explain?
SPY BALLOON SAGA
Dear HIW, I’ve been following the Chinese spy balloon saga and wonder about how these balloons operate?
EXPERIMENT SUCCESS
Dear HIW, We tried the self-inflating balloon experiment. Please find attached the picture of the balloon.
EXPANDING MUSCLES
Dear HIW, When I do workouts, sometimes I find that my muscles go bigger for a few hours after working out, then go back to normal. Why does this happen, or is it in my head?
PRIME IMPORTANCE
Dear HIW, I don’t like learning about prime numbers at school. Why do we need to know them and are they important outside of school?
WE ASKED YOU
This month on social media, we asked you: If you could design the next spacesuit, what cool feature would you be sure to include?
SPECIAL
DAMAGED NERVES
ES An illustration of immune cells attacking a
IMMUNITY MYTHS
Sheena Cruickshank, an immunologist and a professor of biomedical sciences and public engagement at the university of Manchester, separates immunity facts from fiction
SPACE
SPACESUIT SCIENCE
How spacesuit technology has protected astronauts for decades
LAYER BY LAYER
How they support an astronaut’s life
HITCH A RIDE ON LAUNCHERONE
How does Virgin Orbit’s rocket launch multiple satellites into space without a launchpad?
TRANSPORT
MEGA PORTS
Almost everything you consume in your daily life comes through one of these complex facilities
PORT TECHNOLOGIES
Discover the heavy-lifting, cargo-cradling machines that make port processes more efficient
HOW ELECTRIC CAR BATTERIES WORK
Discover the power sources of the world’s all-electric vehicles
EARLY EVS
An example of an early electric vehicle, created
NEXT GENERATION
A solid-state battery with solid electrolyte (white spheres)
SCIENCE
POINTLESS BODY PARTS
Discover the anatomical echoes of our evolutionary journey to the modern day
VESTIGIAL KINGDOM
Plants and animals that have clung onto some of their ancestral anatomy
TECHNOLOGY
WHY STOMACHS RUMBLE
What’s your gut trying to tell you with its growling and grumbling?
INSIDE THE BOMB FACTORY
We take a tour of a world-leading munitions factory to find out how bombs and bullets are made
PRODUCTION
Did you know? BAE produces a million small
HEAVY-METAL ENGINEER
Martin Coats is a graduate engineer at BAE. Here’s how he got his start
HOW WIND FARMS WORK
This technology uses turbines to convert great gusts into electricity
ENVIRONMENT
THE BUZ Z ABOUT BEES
Why different species of this pollinating insect are crucial in keeping our planet healthy
THE WORLD’S AGRICULTURAL POLLINATORS
Bumblebees have relatively bulky round bodies compared to
HIVES AND HOMES
From solitary bees to crowded colonies, here are the locations bees call home
THE SCIENCE OF SINKHOLES
Why holes sometimes open up in the ground and swallow the land above
WHAT IS FROGSPAWN?
Discover the origins of your favourite garden amphibians
HISTORY
VIKING RAIDERS
Portrayed as bloodthirsty pirates pillaging innocent villagers, Vikings also ruled the waves with a lucrative trade network
VIKING VOYAGES
The Vikings were able to voyage further and wider than any civilisation before
RAIDS
No monastery was safe from the fiery scourge that swept over the land from beyond the sea
TRADE
Vikings were powered by a complex and prosperous trade network
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