Nearly three quarters of the world's countries received higher or unchanged scores in the 2025 democracy index. Latin America and the Caribbean broke a nine-year decline and improved their results. The global index rose by 0.02 points, one of the largest increases since 2012.
Project Obsidian will be the world's first geothermal power plant to extract energy from rock at 300 to 500 degrees Celsius. The millimeter wave drilling technique allows drilling to reach depths and temperatures that conventional drills cannot handle.
A study from Ecuador shows that biodiversity in tropical rainforest recovers to more than 90 percent of its original level within three decades. Three-quarters of the animal and plant species typical of untouched primary forest return to abandoned agricultural land during the same period.
The Simon Abundance Index (SAI) measures the relationship between population and resource abundance. It rose from 100 in 1980 to 636.4 in 2025, an increase of 536.4 percent. While the world's population grew by 85 percent, personal resource abundance increased by 244 percent.
Researchers have now mapped every part of the flagellar motor that bacteria use to swim, after more than 50 years of research. The motor spins several hundred revolutions per second and is powered by protons streaming into the cell at more than 2,000 per second.
Pharmaceutical companies Pfizer and Valneva report that their Lyme disease vaccine LB6V reduced the number of disease cases by around 70 percent compared with placebo. It would become the first approved Lyme disease vaccine for humans in nearly three decades.
Pancreatic cancer is one of the deadliest cancers. Fewer than 13 percent of those diagnosed survive more than five years. But after receiving a new mRNA vaccine, nearly 90 percent are still alive six years later.
The share of older people with dementia at any given age has fallen by two-thirds over 40 years. An 85-year-old in 2024 has one-third the risk of having dementia compared to an 85-year-old in 1984.
Hookworm infects more than 100 million people and is a major cause of iron-deficiency anemia, particularly in children and pregnant women. A phase 2 trial shows that a vaccine candidate substantially reduces the intensity of infection.