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Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

New technique will improve the construction of ice roads and bridges

Researchers developed a new technique using radar altimetry to measure river ice thickness and predict safe travel dates on ice roads and bridges in arctic regions. This method can help sustain the network of ice roads built on frozen lakes and rivers, critical for northern communities' food security.

New study estimates the global extent of river ice loss as Earth warms

Researchers found that annual river ice cover will decline by about six days for every one degree Celsius increase in global temperatures, affecting communities and industries. The study also detected widespread declines in monthly river ice coverage, particularly in the Tibetan Plateau, eastern Europe, and Alaska.