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168,132 articles from ScienceDaily

Outsmarting killer bacteria

Scientists are developing a generation of antibiotics that takes the mechanism of bacterial resistance and integrates it into drugs, short-circuiting the superbugs' resistance and rendering them susceptible to treatment.


TUESDAY 14. SEPTEMBER 2010


Watercress may 'turn off' breast cancer signal

New research has revealed that a plant compound in watercress may have the ability to suppress breast cancer cell development by "turning off" a signal in the body and thereby starving the growing tumor of essential blood and oxygen.

Making cookies that are good for your heart

Years of research has proven that saturated and trans fats clog arteries, make it tough for the heart to pump and are not valuable components of any diet. Unfortunately, they are contained in many foods. Now, a research team has developed a soybean which produces oil that is naturally low in saturated and trans...

Targeted agent shows promise for chronic lymphoid leukemia

New research may have identified an experimental agent that targets chronic lymphocytic leukemia (CLL) and perhaps other proliferative disorders of lymphocytes. This study using tumor cells from patients shows that the small-molecule inhibitor CAL-101 directly promotes cell death in CLL cells and disrupts several external survival pathways needed for CLL cell viability and proliferation. The...

2010 was fourth warmest U.S. summer on record

The contiguous United States had its fourth-warmest summer (June-August) on record, according to the latest NOAA State of the Climate report. The report also showed the August average temperature was 75.0 degrees F, which is 2.2 degrees F above the long-term (1901-2000) average. Last month's average precipitation was 2.41 inches, 0.19 inch below the 1901-2000...

If the water looks and smells bad, it may be toxic

Earthy or musty odors, along with visual evidence of blue-green algae, also known as cyanobacteria, may serve as a warning that harmful cyanotoxins are present in lakes or reservoirs. In a new study of cyanobacterial blooms in Midwest lakes, taste-and-odor compounds were found almost every time cyanotoxins were found, indicating odor may serve as a warning that harmful toxins are...

Wildflower ‘armors’ itself against disease

An unusual wildflower that accumulates metals in its leaves has been found to use them as a kind of 'armor' against bacterial infection. Alpine pennycress is a small plant in the mustard family that grows on metal-rich soils scattered around Britain and Europe, such as the sites of former mine workings. The plant is known to accumulate zinc, nickel and cadmium to very high concentrations in its...

Would a molecular horse trot, pace or glide across a surface? Chemists study quadrupedal molecular machines

To determine how a quadrupedal molecular machine would move across a flat metal surface, chemists studied a class of molecular machines that "walk." Molecular machines can be found everywhere in nature, for example, transporting proteins through cells and aiding metabolism. To develop artificial molecular machines, however, scientists first need to understand the rules that govern mechanics at the...