Oncology & Cancer

Genetically engineered virus kills liver cancer

A genetically-engineered virus tested in 30 terminally-ill liver cancer patients significantly prolonged their lives, killing tumours and inhibiting the growth of new ones, scientists reported on Sunday.

Diseases, Conditions, Syndromes

COVID-19 not the sole cause of excess U.S. deaths in 2020

By the year 2017, the United States was already suffering more excess deaths and more life years lost each year than those associated with the COVID-19 pandemic in 2020, according to research from demographers Samuel Preston ...

Alzheimer's disease & dementia

Simple test can help detect Alzheimer's before dementia signs show

York University researchers say a simple test that combines thinking and movement can help to detect heightened risk for developing Alzheimer's disease in a person, even before there are any telltale behavioural signs of ...

Cardiology

Mayo Clinic Minute: Watch for these heart arrhythmia red flags

A heart arrhythmia is an irregular heartbeat. It occurs when the electrical signals that tell the heart when to beat and pump blood aren't functioning properly. Some heart arrhythmias can be harmless and just bothersome, ...

Neuroscience

How the brain 'approximates' without actually counting

From the time of early infancy, humans are endowed with the capacity to approximate the number of objects in their visual field, an ability that continues throughout life and may underlie the development of more complex mathematical ...

Alzheimer's disease & dementia

Mayo Clinic Q and A: 4 ways to reduce your risk of dementia

DEAR MAYO CLINIC: I am in my mid-40s and have two young children. My mother developed memory issues in her early 60s, and it has progressively worsened. Her sisters also have related issues. How can I reduce my riskā€”and ...

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History

History (from Greek ἱστορία - historia, meaning "inquiry, knowledge acquired by investigation") is the discovery, collection, organization, and presentation of information about past events. History can also mean the period of time after writing was invented. Scholars who write about history are called historians. It is a field of research which uses a narrative to examine and analyse the sequence of events, and it sometimes attempts to investigate objectively the patterns of cause and effect that determine events. Historians debate the nature of history and its usefulness. This includes discussing the study of the discipline as an end in itself and as a way of providing "perspective" on the problems of the present. The stories common to a particular culture, but not supported by external sources (such as the legends surrounding King Arthur) are usually classified as cultural heritage rather than the "disinterested investigation" needed by the discipline of history. Events of the past prior to written record are considered prehistory.

Amongst scholars, the fifth century BC Greek historian Herodotus is considered to be the "father of history", and, along with his contemporary Thucydides, forms the foundations for the modern study of history. Their influence, along with other historical traditions in other parts of their world, have spawned many different interpretations of the nature of history which has evolved over the centuries and are continuing to change. The modern study of history has many different fields including those that focus on certain regions and those which focus on certain topical or thematical elements of historical investigation. Often history is taught as part of primary and secondary education, and the academic study of history is a major discipline in University studies.

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