The announcement of the Nobel Medicine Prize on Monday opens an unusual 2019 Nobel season in which two literature laureates will be crowned after a scandal postponed last year's award, amid speculation Greta Thunberg could nab the prestigious Peace Prize.
The winner of the Medicine Prize will be revealed on Monday at 11:30 (0930 GMT) in Stockholm. It will be followed by the prizes for physics on Tuesday, chemistry on Wednesday, literature on Thursday, and economics on Monday, October 14.
In between, the Peace Prize will be awarded in Oslo on Friday, October 11, with Swedish teen climate activist Greta seen as the favourite on betting sites such as Ladbrokes.
Predictions about possible winners are notoriously difficult as the prize-awarding institutions keep the names of the nominees secret for 50 years.
For the Peace Prize, the Norwegian Nobel Committee has only disclosed that it received 301 nominations this year.
Traditionally sensitive to issues gripping the public's attention, the committee has undoubtedly noted the recent "Greta phenomenon" and the enthusiasm she has sparked among young generations in her campaign to raise awareness about climate change.
Experts remain however divided on whether there is an actual link between armed conflicts and climate change.
The head of the Peace Research Institute of Oslo, Henrik Urdal, therefore deemed it "extremely unlikely" the 16-year-old would win, adding her young age could also work against her.
The youngest laureate so far is Malala Yousafzai, who won the 2014 Peace Prize at the age of 17.
Other names circulating are Ethiopian Prime Minister Abiy Ahmed, who clinched a peace deal with arch foe Eritrea, and NGOs such as Reporters without Borders and the Committee to Protect Journalists.
For the Medicine Prize, the Karolinska Institute has received 633 nominations.
According to Swedish public radio SR, the honour could go to Lebanese-born American geneticist Huda Zoghbi for the discovery that a genetic mutation leads to the brain disorder Rett Syndrome.
Sweden's biggest daily Dagens Nyheter (DN) meanwhile said immunologists Marc Feldmann of Australia and Indian-born British researcher Ravinder Maini could win for their work on rheumatoid arthritis.
American Mary-Claire King, who discovered the BRCA1 gene responsible for a hereditary form of breast cancer, was also mentioned.
DN said meanwhile the Physics Prize could go to quantum physics research, citing US scientist John Clauser, Alain Aspect of France, and Austria's Anton Zeilinger.
Ronald Hanson of the Netherlands could win for his work on quantum entanglement, SR said.
For the Chemistry Prize, American John Goodenough, who invented lithium batteries, could become the oldest ever winner of a Nobel, at the age of 97.
But it could also go to two women, Emmanuelle Charpentier of France and Jennifer Doudna of the US, for the gene-editing technique known as the CRISPR-Cas9 DNA snipping tool, a type of genetic "scissors" used to cut out a mutated gene in a human embryo and replace it with a corrected version.
Chinese-born American Feng Zhang also claims to have discovered the technique, which could also be eligible for the Medicine Prize.