Two giant holes in the Sun could create impactful space weather for Earth in early February. Recent NOAA satellite images show two coronal holes, areas on the surface of the Sun devoid of plasma.

Appearing as cooler, dark patches when viewed in extreme ultraviolet and soft X-ray images of the sun, coronal holes are caused when the local magnetic field opens up, allowing the solar wind to ...

Comparison of laparoscopic radiofrequency ablation with percutaneous radiofrequency ablation in the treatment of chronic hepatitis B-related hepatocellular carcinoma involving specific sites: A ...