Acidic oceans cause fish to lose their sense of smell

When carbon dioxide is absorbed by seawater carbonic acid is formed, making the water more acidic. Oceanic CO2 has risen by 43% and is predicted to be two and a half times current levels by the end of this century, according to Science Daily.

Fish use their sense of smell (olfaction) to find food, safe habitats, avoid predators, recognize each other and find suitable spawning grounds. A reduction in their ability to smell therefore can compromise these essential functions for their survival.

The new study provides evidence that economically important species will be affected by elevated CO2, leaving fish vulnerable because it affects their ability to detect odours.

Arctic wild goose chase threatens chicks as temperatures rise

Rising temperatures in the Arctic are encouraging Barnacle geese to speed up their migration journeys north every spring, says a new study.

But their efforts to go faster are leaving them too drained to lay their eggs early when they arrive, according to BBC.

This is bad news for the species as their chicks are hatched too late to take advantage of the best food, so fewer are surviving.

The scientists involved say the birds will have to adapt and migrate earlier.

We may have less control over our thoughts than previously assumed

Think you're totally in control of your thoughts? Maybe not as much as you think, according to a new San Francisco State University study that examines how thoughts that lead to actions enter our consciousness.

While we can "decide" to think about certain things, other information -- including activities we have learned like counting -- can enter our subconscious and cause us to think about something else, whether we want to or not. Psychologists call these dispositions "sets," explains Professor of Psychology Ezequiel Morsella, one of four authors on a new study that examines how sets influence what we end up thinking about, according to Science Daily.

Newborn planet pictured for first time

Astronomers have captured this image of a planet that's still forming in the disk of gas and dust around its star.

Researchers have long been on the hunt for a baby planet, and this is the first confirmed discovery of its kind, according to BBC.

Young dwarf star PDS 70 is less than 10 million years old, and its planetary companion is thought to be between five and six million years old.

Why scientists are counting seal pups in the Thames Estuary

Sixty years ago the Thames Estuary was regarded as "biologically dead" and largely devoid of wildlife.

But, in recent years seals have returned to the Thames as well as to the coastal and low-lying lands bordering the estuary, according to BBC.

Last year, scientists recorded more than 3,500 harbour and grey seals.

Now, they are starting the first count of seal pups to see how important the area is a breeding ground.