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Human heart, 3D coloured computed tomography (CT) scan. This is an oblique side view. The heart is a hollow muscular organ that receives and pumps blood from and around the body through the veins and arteries that branch out from its four internal chambers. The external surface of the heart includes the coronary arteries and veins that supply blood to the heart muscle. This scan includes parts of the heart's major veins and arteries, with the aorta running down right.

Health

Rare mutation in Old Order Amish people linked to lower heart disease

A genetic mutation may cause lower levels of cholesterol and a blood clotting protein associated with heart disease, and the hope is to design drugs that have the same effect

News

Blacklegged tick (Ixodes pacificus) on a leaf, carrier of the Lyme disease, 2005.

Health

mRNA vaccine against tick bites could help prevent Lyme disease

News

Some genes in the brain may make 100 different proteins

Health

Some genes in the brain may make 100 different proteins

News

Why Alzheimer’s is not a single disease – and why that matters

Health

Why Alzheimer’s is not a single disease – and why that matters

Features

Alzheimer's disease. Series of coloured computed tomography (CT) scans of an axial section through the head of a 74-year-old patient with Alzheimer's disease. The front of the brain (brown) is at the top. Alzheimer's is a neurodegenerative disease and a common cause of dementia in the elderly. It causes brain atrophy (decrease in size), shown here by the enlarged ventricle cavities (white, at centre of brain) and the widened pale blue regions. The brain shrinkage caused by Alzheimer's disease leads to memory loss, confusion, personality changes and ultimately death. The cause of Alzheimer's disease is not known and there is no cure.

Mind

Treating Alzheimer's as having many causes may help us beat it

Leader

Vaccine skin patch

Health

Skin patch coated in covid-19 vaccine may work better than injections

News

Empty airport

Health

Australia has had zero measles in 2021 due to covid-19 border closure

News

koala being vaccinated

Environment

This koala was first to be vaccinated against chlamydia in new trial

News

Lake Hazen base camp on Ellesmere Island

Environment

Climate change linked to risk of viruses jumping species in the Arctic

News

Guinea confirms West Africa’s first case of deadly Marburg virus

Health

Guinea confirms West Africa’s first case of deadly Marburg virus

Marburg, a virus similar to Ebola that causes a deadly haemorrhagic fever, has been detected in Guinea. Local health authorities are working with the World Health Organization to contain the spread

News

Environment

Frogs are battling their own terrible pandemic – can we stop it?

Features

Health

Some people can tell if you have an infection just by looking at you

News

Life

Traded wild animals carry 75 per cent of diseases humans can catch

News

Environment

Cattle vaccine to be trialled in England in fight against bovine TB

News