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Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with 91av’s exclusive in-depth articles, interviews and long reads.

Space

Our solar system could be hiding an extra planet the size of Uranus

Many planets are thought to be flung away from their stars, but it’s possible that some get trapped on the way out – and one could be lurking at the edge of our own solar system

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A small number of people in Florida and Texas have contracted malaria

Health

What we know so far about the malaria cases in Florida and Texas

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Environment

Record-setting heatwave bakes US South and Mexico

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A microscope image showing some of the spherules

Space

Interstellar meteor fragments may have been found in the Pacific Ocean

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A scanning electron micrograph of blood from someone with iron deficiency anaemia, showing irregularly-shaped, small red blood cells

Health

Almost 40 per cent of US girls and young women have low iron levels

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Technology

Watch a transforming robot roll, crawl, stand up and fly

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Some orangutans use calls that involve making two sounds at once

Life

Orangutans can make two sounds at once like a beatboxer

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Environment

Antarctic sea life under threat as talks on protected areas fail

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Technology

Inside the gigafactory producing the greenest batteries in the world

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Health

Fasting diets are not better than calorie counting for weight loss

Diets that involve intermittent fasting or time-restricted eating have become popular in recent years, but it seems they help people lose weight simply by eating less

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Life

Dolphins ‘talk’ to their young in a higher pitch, just like humans do

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Life

Megalodon may have been warm-blooded unlike most other sharks

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Mind

How does consciousness arise? A 25-year-old bet has now been decided

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Health

Eating at night could boost your muscles and help you run for longer

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