Monday's science stories

Nov 30, 2020 - Health

First blood test to help diagnose Alzheimer's goes public

Photo: Jerry Naunheim Jr./C2N Diagnostics via AP

A non-COVID medical breakthrough: People over 60 now have access to a blood test for Alzheimer's disease.

Why it matters: The existing PET brain scan test costs some people about $5,000 and often isn't covered by insurance, AP reports.

Updated Nov 29, 2020 - World

Bushfire threatens Sydney homes as record heat wave hits Australia

A helicopter water-bombing a bushfire at Northmead in Sydney, Australia, on Sunday morning local time. Photo: Jenny Evans/Getty Images

Scores of bushfires are threatening parts of Australia during a record heat wave — including an out-of-control blaze that prompted evacuations in Sydney Sunday and another fire ravaging the popular Queensland tourist destination of Fraser Island.

Why it matters: New South Wales' fire chief Shane Fitzsimmons told Channel 9 Sunday it's the "worst day" for fires since last season's deadly "Black Summer" bushfires, when temperature records were broken across Australia — including in Sydney, which reported its hottest November night this weekend.