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A father’s lifestyle before conception may affect his future children in ways scientists are only beginning to understand. A new study found that obesity in men can change tiny molecules in sperm called microRNAs, which may affect how sons process sugar and store fat later in life. Researchers from the University of Southern Denmark and international collaborators found evidence that a man’s diet and weight before having children could influence his children’s metabolism years [...]

Workers building a road-rail terminal in northeastern Brazil never expected to uncover the fossils of a massive dinosaur beneath the dirt and concrete. The fossils were discovered nearly 26 feet underground. At first, the archaeologists wondered whether the bones could have been those of a huge prehistoric animal that roamed Earth at the time as early humans. However, the depth of the fossils suggested otherwise. These bones dated from an era much more ancient than that of either [...]

Cold air pushing into the United States may seem far removed from the soils of the Brazilian Amazon. Yet the atmosphere does not care about borders. It moves heat, water, smoke, dust, and nutrients across oceans. A new study shows that large weather systems can shape whether the Amazon receives air packed with African particles or air that has been scrubbed clean by rain over the Atlantic. Why the Amazon needs help The Amazon looks endlessly rich. Its trees grow thick, its rivers run [...]

Daily vitamin D intake recently helped several women with breast cancer achieve no-cancer-found results following chemotherapy. This data gave doctors a practical reason to test whether high vitamin levels can strengthen standard treatment measures. Study setup isolates vitamin effect Inside a six-month clinical trial in Brazil, 80 women over 45 began chemotherapy before breast cancer surgery. From the tissue removed after treatment, researchers at Botucatu Medical School at São [...]

People choose cardio based on preference. Some run for pace and distance, while others turn to swimming for a full-body workout. New research suggests these choices may shape the heart in different ways. The results suggest that swimming may drive stronger and more complex changes inside the heart muscle, even when effort levels match. “Swimming and running are two excellent ways to improve cardiorespiratory health and protect the heart muscle, but we wanted to know if one could be even [...]

The jaguar still moves through parts of the Atlantic Forest, but its future there looks shaky. People often think of habitat loss and illegal hunting as the main threats to large predators. Those problems are real. Yet something quieter is unfolding at the same time. Jaguars are running out of food. This issue cuts deeper than it first appears. When a top predator struggles to find enough to eat, the whole ecosystem starts to shift. The Atlantic Forest , one of the most diverse [...]

The Amazon rainforest often feels timeless. Dense canopies stretch across the horizon, and life pulses through every layer. Yet beneath this green expanse lies a human story that began long before modern science arrived. It is a story written in soil. Researchers have turned their attention to a rare type of earth known as Amazonian dark earth, or terra preta. Created centuries ago by Indigenous communities, this soil still holds an unusual ability to support plant life. Now, [...]

A new study suggests that diets high in ultra-processed foods may be doing more than affecting physical health. They may also be chipping away at one of the brain's most basic abilities: the ability to focus. The research, led by Monash University together with the University of São Paulo and Deakin University , looked at more than 2,100 Australian adults who were middle-aged or older and did not have dementia. What the researchers found was pretty unsettling. Even a small increase [...]

Nature works through connections. Animals move across landscapes, water flows through ecosystems, and even microscopic life depends on these links. When humans break these connections , the effects go beyond what we can see. A recent Penn State study on tropical amphibians shows that breaking links between habitats does not just isolate animals. It disrupts the tiny microbial allies that help them survive disease. Microbes as first defenders Most people think of immunity as [...]