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Cell Cycle / Cell Division & its Regulation

The cell cycle is a fundamental process that drives cell growth, division, and replication. In this video, we’ll break down the different phases of the cell cycle (G1, S, G2, and M), explore the key checkpoints that regulate progression, and discuss the critical role of cyclins and CDKs in cell cycle control.
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‘Lost City’ deep in the Atlantic is like nothing else we’ve ever seen on Earth

The reality of what lies within our oceans has fascinated people since time immemorial, so it’s no wonder we’ve created countless myths about the watery depths.

But step aside, Atlantis, scientists have discovered a real Lost City beneath the waves, and this one is teaming with life.

The rocky, towering landscape is located west of the Mid-Atlantic Ridge mountain range, hundreds of metres below the surface of the Atlantic Ocean, and consists of massive walls, columns and monoliths stretching more than 60 metres (200ft) tall.

Charged Droplets Can Hit a Surface Without Splashing

The messy breakup of a liquid droplet that occurs when it hits a surface can be suppressed by giving the droplet an electrical charge.

Liquid droplets hit solid surfaces in a range of technological processes, such as spray coating and inkjet printing. Typically, the collision causes the droplet to break up into many tiny fragments, creating a splash. A research team has now shown that electrical charging of droplets can reduce or even entirely suppress the splashing, offering greater control over the impact process [1]. The findings could be useful in the design of more precise and efficient droplet-related technologies.

Electrical charging of droplets is very common both in nature and in technology, for example, in thundercloud electrification. The charging usually results from contact electrification, where friction, or even mere contact, between two surfaces results in electrons or ions passing between them. The effect can be exploited technologically: For example, mechanical engineer Zuankai Wang, now at the Hong Kong Polytechnic University, and his colleagues have previously shown that the charge on falling water droplets can be harnessed for electricity generation [2].

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