Monarch butterfly population moves closer to extinction

by Olga R. Rodriguez This Aug. 19, 2015, file photo, shows a monarch butterfly in Vista, Calif. The number of western monarch butterflies wintering along the California coast has plummeted to a new record low, putting the orange-and-black insects closer to extinction, researchers announced Tuesday, Jan. 19, 2021. A recent count by the Xerces Society […]

Clearing land to feed 2050’s human population threatens biodiversity

Humankind’s growing need for food is running up against thousands of other species’ need for space. By 2050, humans may need to clear an additional 3.35 million square kilometers of land for agriculture. Converting these largely natural habitats, collectively about the size of India, would squeeze more than 17,000 vertebrate species from some of their […]

Humpback whale songs provide insight to population changes

Humpback whale off Maui. Credit: HIHWNMS/NMFS ESA Permit #782-1719 Approximately 8,000-12,000 of the North Pacific humpback whale stock visits the shallow waters of the Hawaiian Islands seasonally to breed. During this time, mature males produce an elaborate acoustic display known as “song,” which becomes the dominant source of ambient underwater sound between December and April. […]

Humpback whale songs provide insight to population changes — ScienceDaily

Approximately 8,000-12,000 of the North Pacific humpback whale stock visits the shallow waters of the Hawaiian Islands seasonally to breed. During this time, mature males produce an elaborate acoustic display known as “song,” which becomes the dominant source of ambient underwater sound between December and April. Following reports of unusually low whale numbers that began […]

Researchers explore population size, density in rise of centralized power in antiquity — ScienceDaily

Early populations shifted from quasi-egalitarian hunter-gatherer societies to communities governed by a centralized authority in the middle to late Holocene, but how the transition occurred still puzzles anthropologists. A University of Maine-led group of researchers contend that population size and density served as crucial drivers. Anthropology professor Paul “Jim” Roscoe led the development of Power […]

Effect of climate change on infectious diseases unknown to half of the population

The transmission of specific infectious diseases have been altered by processes linked to climatic and environmental anomalies. An increase in infectious outbreaks is expected to be seen in mild climates due to global warming, and the alterations in climate patterns, such as El Niño, are modifying the presence, density, strength and dynamics of transmission of […]

A novel monoclonal antibody therapy cuts LDL cholesterol by half in a high-risk patient population,

The investigational drug evinacumab reduced low-density lipoprotein (LDL) cholesterol–the so-called “bad” cholesterol–by 50 percent in patients with severe hypercholesterolemia whose condition is resistant to standard treatments, a phase 2 study from the Icahn School of Medicine of Mount Sinai and other global academic sites has found. Results from the study sponsored by Regeneron, are being […]