New research demonstrates how specially engineered bacteria taken orally can operate as a delivery system for vaccines and antiviral therapies.

Researchers took a fresh approach to urban research by using artificial intelligence to explore the emotional side of city life. Their goal was to better understand the link between a city's physical features and how people feel in those environments.

Antimicrobial resistance is a growing issue in aquaculture. Researchers discovered that combinations of bacteria from live-feed microalgae are capable of inhibiting pathogens.

Hurricane winds are a major contributor to storm-related losses for people living in the southeastern coastal states. As the global temperature continues to rise, scientists predict that hurricanes will get more destructive -- packing higher winds and torrential rainfall. A new study projects that wind losses for homeowners in the Southeastern coastal states could be 76 percent higher by the year 2060 and 102 percent higher by 2100.

Songbirds who make the arduous flight from their nesting sites in northern boreal forests to warm, southern climates in the winter may be rewarded for their journey with greater genetic diversity.

Researchers look to extremes in the past to study how the system reacts to imbalances. They detail an overlooked mechanism for how the ocean can help stabilize massive releases of carbon into the atmosphere following volcanic eruptions.

New research reveals how repeated genetic changes in hibiscus flowers have led to the loss of visually striking bullseye patterns despite their advantage in attracting pollinators like bumblebees.

Two of the traits that set modern humans apart from non-human primates are taller stature and a higher basal metabolic rate. Researchers have identified a genetic variant that contributed to the co-evolution of these traits. This mutation seems to help people grow taller -- especially when they consume a lot of meat.

New research shows that dentine, the inner layer of teeth that transmits sensory information to nerves inside the pulp, first evolved as sensory tissue in the armored exoskeletons of ancient fish.

Researchers developed a way to extend the shelf life of vegetables by injecting them with melatonin using biodegradable microneedles.

A team of scientists has answered a long-standing question in cell biology, uncovering how the cell's main energy currency, ATP, is transported into the endoplasmic reticulum (ER). Disrupted energy transport could affect diseases such as type 2 diabetes, cancer, and neurodegenerative disorders. The study confirms that the transporter protein SLC35B1 is the key gateway for ATP entry into the ER.

With its fascinating ability to regrow entire limbs and internal organs, the Mexican axolotl is the ideal model for studying regeneration. Scientists have now found a factor that tells cells which part of the arm to regenerate -- and used it to reprogram the identity of cells as they develop. This breakthrough for the regeneration research field has implications for tissue engineering, including in human tissues.

Cancer cells respond to stress with greater diversity. Drugs that affect DNA replication, or radiation that causes direct DNA damage, lead to increasingly diverse offspring over multiple cell generations. This increases the tumor's genetic complexity and facilitates the development of resistance to therapy. Researchers have now investigated the emergence of cellular diversity in real time.

Large shifts in UV radiation at Lake Tahoe are associated with wet and dry climate extremes, finds a new study.

Biologists recently announced that they have released the first broad scale, comparative, fine-grained analysis linking the amplitude, or volume, of a birds' song to its vocal frequency, or pitch. Though biologists have long wondered whether birds are able to control their pitch as they get louder or if their vocal abilities are mechanically limited, until now there has been no wide-ranging data with which to probe this aspect of the evolutionary history of birdsong.

Plants that reproduce exclusively by self-pollination arise from populations with extremely low diversity to begin with. The research not only adds a facet to possible evolutionary strategies, but also lends weight to Darwin's suspicion that this strategy might be a path to extinction.

Proteins are among the most studied molecules in biology, yet new research shows they can still hold surprising secrets. Researchers have discovered previously undetected chemical bonds within archived protein structures, revealing an unexpected complexity in protein chemistry. These newly identified nitrogen-oxygen-sulphur (NOS) linkages broaden our understanding of how proteins respond to oxidative stress, a condition where harmful oxygen-based molecules build up and can damage proteins, DNA, and other essential parts of the cell.

Poor mental health, rising obesity rates, exposure to violence and climate change are among the key challenges facing our adolescents today, according to a global report.

New research could improve the efficiency of electrochemical carbon-dioxide capture and release by six times and cut costs by at least 20 percent. Researchers added nanoscale filtering membranes to a carbon-capture system, separating the ions that carry out the capture and release steps, and enabling both steps to proceed more efficiently.

What do chickens and people with a common reproductive disorder have in common? More than one might think -- and a widely-used diabetes medication might just be the surprising link.