Author Alexandra Franklin-Cheung

Alexandra Franklin-Cheung

Recent articles by Alexandra Franklin-Cheung
How do thunderstorms form? © Getty Images

What causes lightning? The simple science, explained

It all starts with warm, damp air.
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Is it true that the Pacific and Atlantic Oceans don’t mix? © Getty Images

Is it true that the Pacific and Atlantic Oceans don’t mix?

The two great oceans meet at very specific point on our planet.
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What are nurdles? © Alamy

What are nurdles?

Nurdles can work their way into the digestive tracts of various marine animals.
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Is suncream bad for coral reefs? © Getty Images

Is sunscreen bad for coral reefs?

Lathering up with sunscreen before enjoying a cooling dip can lead to harmful chemicals getting washed out to sea.
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Does human body temperature impact global warming? © Getty Images

Does human body temperature impact global warming?

Feeling hot, hot, hot...
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Will electric cars reduce pollution? © Getty Images

Are electric cars definitely greener than petrol?

The UK is set to ban the sale of new petrol and diesel cars by 2030.
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Sustainable air travel: Could long-haul flights ever go green?

As we start thinking about resuming flights abroad, we wonder whether guilt-free, sustainable air travel will be possible for our summer holidays.
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Why hasn’t tidal power taken off yet? © Alamy

Why hasn’t tidal power taken off yet?

Tidal power has good potential as a renewable energy source but there are currently a few barriers to its growth.
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Mountains © Getty

Mountains: a scientist’s guide to the tallest peaks on Earth and beyond

What’s the biggest mountain in the solar system? Is Mount Everest getting taller? And what animals live in high climates? All your questions, answered.
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How do deserts form? © Daniel Bright

How do deserts form?

The step-by-step science behind how Earth’s most arid landscapes are made.
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Can space exploration be environmentally friendly? © Getty Images

Can space exploration be environmentally friendly?

One SpaceX rocket launch emits 112 tonnes of refined kerosene.
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How does solar energy actually work? © Getty Images

How does solar energy actually work?

Bask in our simple explanation to how humans turn the Sun’s rays into power.
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Could we farm thunderstorms for power? © Dan Bright

Could we farm thunderstorms for power?

Wind and solar sources have become clean energy champions. But can humans harness lightning in the same way?
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Is it possible to recycle plastics an infinite number of times? © Getty Images

Is it possible to recycle plastics an infinite number of times?

Asked by: Holly Goodrick, London
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Does the Sun make a sound? © Getty

Will increased Sun activity make climate change worse?

Asked by: Tony Hersh, Newbury
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Why is there a hurricane season? © InterNetwork Media/Getty Images

Why is there a hurricane season?

The science behind why hurricanes only happen at certain times of year
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Where does soil come from? © Getty Images

Where does soil come from?

Asked by: Craig Edwards, Wolverhampton
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What does biodegradable plastic degrade into? © Getty Images

What does biodegradable plastic degrade into?

Asked by: Rachel Campbell, via email
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If global warming increases rainfall, could the extra clouds block sunlight and help cool the Earth? © Getty Images

If global warming increases rainfall, could the extra clouds block sunlight and help cool the Earth?

Asked by: Tristin Quinn, Tullamore, Ireland
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Are our pets bad for the environment? © Getty Images

Are our pets bad for the environment?

Asked by: Rex Legge, via email
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Is it true that you shouldn’t keep plants in the bedroom? © Getty Images

Is it true that you shouldn’t keep plants in the bedroom?

Asked by: Jessica Lees, Ipswich
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Why are there two layers of clouds? © Dan Bright

Why are there two layers of clouds?

Asked by: Shiri Kleinberg, London
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What would have happened if we’d carried on using CFCs? © Getty Images

What would have happened if we’d carried on using CFCs?

Asked by: Jessica Howard, Inverness
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Does the carbon dioxide released from fizzy drinks affect the atmosphere? © Getty Images

Does the carbon dioxide released from fizzy drinks affect the atmosphere?

Curiosity bubbling over for this one. The CO2 released from your soda is a fraction of our own emissions.
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