The Andaman coast was one of very few places in the world with a viable population but then dead dugongs began washing up. Now half have gone

A solitary figure stands on the shore of Thailand’s Tang Khen Bay. The tide is slowly rising over the expanse of sandy beach, but the man does not seem to notice. His eyes are not fixed on the sea, but on the small screen clutched between his...

Amateur conservationist and social media influencer Theerasak ‘Pop’ Saksritawee has a rare bond with Thailand’s critically endangered dugongs. With dugong fatalities increasing, Pop works alongside scientists at Phuket Marine Biological Centre to track the mammals with his drone and restore their disappearing seagrass habitat. Translating complex science for thousands online, Pop raises an...

The spectacular aurora australis, also known as the southern lights, may be visible as far north as Victoria and New South Wales

A ‘severe’ solar storm, which is being monitored by the National Emergency Management Agency, could make auroras visible in Australia as well as cause disruptions to the power grid. Here’s what you need to know about the solar storm.

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Studies detecting microplastics throughout human bodies have made for alarming reading in recent years. But last week, the Guardian’s environment editor, Damian Carrington, reported on major doubts among a group of scientists about how some of this research has been conducted.

Damian tells Ian Sample how he first heard about the concerns, why the scientists think the discoveries are probably...

For three weeks, I wore stickers on my skin supposed to address all sorts of conditions. Are they a panacea, problem or performance?

This morning, I woke up feeling a little groggy. My go-to remedy is usually a coffee and cold-water face plunge, followed by a compulsive phone scroll. But today called for something more, so I unpeeled a small, yellow “energy” patch the size of a walnut,...

Major disturbance in the Earth’s magnetic field may make northern lights visible far more south than usual

The aurora could be visible across Canada and much of the northern tier of US states on Monday night, and possibly even further south, following a major disturbance in the Earth’s magnetic field, a forecast shows.

The forecast, from the National Oceanic and Atmospheric Administration’s...

Alien lifeforms | Power of prayer | Corned beef | Remembering birthdays | Celebrity old-age home

Your article (Nasa moon rocket creeps to its launchpad in preparation for astronaut flight, 18 January) quotes the crew commander of Artemis II, Reid Wiseman: “They are so fired up that we are headed back to the moon. They just want to see humans as far away from Earth as possible.” I imagine...

The answers to today’s puzzles

Earlier today, I set you these three geometrical puzzles. Here they are again with solutions.

1. Bonnie Tiler

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Study suggests being optimistic produces more antibodies, hinting at future healthcare potential of mental techniques

Being optimistic may boost the immune system according to research that points to a connection between the mind and our body’s natural defences.

Scientists have found people who used positive thinking to boost activity in the brain’s reward system responded better to...

Brown Swiss in Austria has been discovered using tools in different ways – something only ever seen in humans and chimpanzees

Scientists have been forced to rethink the intelligence of cattle after an Austrian cow named Veronika displayed an impressive – and until now undocumented – knack for tool use.

Witgar Wiegele, an organic farmer and baker from a small town in Carinthia near the Italian...

Study links rapid growth of ocean macroalgae to global heating and nutrient pollution

Scientists have warned of a potential “regime shift” in the oceans, as the rapid growth of huge mats of seaweed appears to be driven by global heating and excessive enrichment of waters from farming runoff and other pollutants.

Over the past two decades, seaweed blooms have expanded by a staggering 13.4% a...

Earth’s satellite will be visible in conjunction with the ringed planet as twilight gives way to darkness

A slender crescent moon slides past Saturn this week, offering a rewarding conjunction. It will be the perfect way to start your evening, a little quiet contemplation of the night sky as the evening twilight gives way to full darkness.

The chart shows the view looking south-west from London...

A return to nuclear power is at the heart of Japan’s energy policy but, in the wake of the 2011 disaster, residents’ fears about tsunamis, earthquakes and evacuation plans remain

The activity around the Kashiwazaki-Kariwa nuclear power plant is reaching its peak: workers remove earth to expand the width of a main road, while lorries arrive at its heavily guarded entrance. A long perimeter...

As crypto wealth continues to grow, criminals are mixing sophisticated hacks with deception, and in some cases, real life violence.

Errors in measuring microplastic pollution can be corrected. Public trust in science also needs to be shored up

It is true that science is self-correcting. Over the long term this means that we can generally trust its results – but up close, correction can be a messy process. The Guardian reported last week that 20 recent studies measuring the amount of micro- and nanoplastics in the human...

Exclusive: DNA test means patients could be offered most effective treatment first, boosting their chances of beating the disease

Scientists have developed a simple DNA blood test that can predict how well patients with breast cancer will respond to treatment.

More than 2 million people globally each year are diagnosed with the disease, which is the world’s most prevalent cancer. Although...

These microscopic mites, which burrow under your skin and cause ferocious itching, are incredibly hard to get rid of – and cases in the UK have soared. What is causing the outbreak, and is there anything we can do about it?

Louise (not her real name) is listing the contents of a bin liner she has packed with fresh essentials in case of emergency. Clothes, toothbrushes, hairbrushes, a teddy …...

The food, beauty and pharmaceutical industries poison our self-image. GLP-1 drugs will only make them richer – and strengthen the hold they have over us

Fifty years ago, I started thinking about the demand for women to look a certain way and the rebellions against the narrow ways in which we were supposed to display (and not display) our bodies. For a while, there was a conversation about the...