The year 2025 brought a plethora of scientific breakthroughs, each with its own unique story. From a miracle baby's genetic surgery to the controversial discovery of a potentially habitable exoplanet, these are the five most remarkable science discoveries of 2025. But here's where it gets controversial...
Water World: A Potential Alien Habitat
Professor Alan Duffy, astronomer and pro-vice chancellor of flagship initiatives at Swinburne University, revealed a groundbreaking discovery about K2-18b, an exoplanet orbiting a red dwarf star. Initial observations in 2015 hinted at the planet's water-rich atmosphere, but a recent study using the James Webb Space Telescope confirmed its immersion in water, making it a 'Hycean' or water world. This discovery is controversial because the chemical signal detected, which could be dimethyl sulphide, is relatively low and requires interpretation. Duffy emphasizes the importance of considering the conditions for alien life and ensuring that any observed phenomena are not due to less sensational causes.
AI-Crafted Antibodies: A Biotech Revolution
Professor Merlin Crossley, molecular biologist and deputy vice-chancellor of academic quality at the University of NSW, highlighted the significant impact of AI in biotech. The development of AlphaFold, an AI model designed to predict protein structures, has revolutionized the field. Proteins, the building blocks of life, have complex shapes that are difficult to determine without expensive experiments. AlphaFold can accurately predict these structures, and its designers won the 2024 Nobel Prize. This breakthrough enables the design of custom antibodies for various diseases, as demonstrated by the first patient dosed with an AI-designed antibody for inflammatory bowel disease.
Baby KJ: A Genetic Miracle
The story of Baby KJ, born with a genetic disorder, showcases the power of gene editing. KJ's condition, caused by a key enzyme mutation, led to toxic buildup in his body. A liver transplant was considered, but instead, scientists performed genetic surgery, the first of its kind. Within six months, a custom gene editor, packaged in lipid nanoparticles, was created to target and edit the specific DNA required. The treatment appeared successful, with no serious adverse effects, offering hope for millions suffering from genetic diseases.
Quantum Encryption Breakdown: A Looming Threat
Professor Nalini Joshi, chair of applied mathematics at the University of Sydney, discussed the implications of a preprint paper by Google Quantum researcher Craig Gidney. The paper suggests that quantum computers can factor 2048-bit RSA integers with just one million 'noisy' qubits, a significant reduction from previous estimates. This breakthrough raises concerns about the security of widely used encryption protocols, as quantum computers can theoretically break them faster than conventional computers. The race is on to develop quantum-resistant encryption methods.
The Rise of the Dark Metabolome: Unlocking Biological Secrets
Professor Oliver Jones, professor of chemistry at RMIT, introduced the concept of the dark metabolome, which refers to the uncharacterized metabolites in the human body. While genomics studies genes, metabolomics examines small biological molecules. By measuring a wide range of metabolites and analyzing their changes in response to disease, scientists aim to predict potential harm before it occurs. However, the increasing complexity of analytical methods has led to a growing number of unidentified metabolites, leaving many secrets to be uncovered. Jones believes that solving this issue could lead to significant advancements in understanding biology and its impact on climate change and environmental pollutants.
