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How do different species survive in the aftermath of a wildfire? Read more:  https://bbc.in/4hj7Vnv 

Sweden's long, cold nights might put you off going there in winter, unless, you are in search of that elusive 21st-Century luxury: a good night's sleep. Read more:  https://bbc.in/3WvFpGK 

Across the UK, a collection of natural marvels reveal themselves at this time of year. Read more:  https://bbc.in/4gST5nA 

Why do people risk their lives to summit the world's deadliest mountains? Read here:  https://bbc.in/3Ctrw5h 

Caterpillars contain a potential windfall of medically useful compounds within their toxic secretions. Read more:  https://bbc.in/3DZF5tD 

Tidying guru Marie Kondo became a global figure with her KonMari method:  https://bbc.in/3DSXHeN 

Grief has long thought to be a human trait, but other animals – from killer whales to crows – also appear to suffer loss when a companion dies. Read more:  https://bbc.in/40b6K25 

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn:  https://bbc.in/3E0J4q1 

Recent findings show bigmouth buffalo fish have perplexingly long lives and appear to get healthier as they age. Read more:  https://bbc.in/40epeyK 

What is the truth behind the mythology that surrounds civil rights leader Martin Luther King Jr? Read more:  https://bbc.in/4j76hqx