At first sight, Elana Schlenker’s pop-up store, Less Than 100, which was open in Pittsburgh during the month of April appeared just like any other gift store. However, when shoppers went to pay, they were in for a surprise. That's because while men paid full price, women received a 24% discount.

Though that may appear to be blatant(公然的) discrimination, Elana was merely obeying the store’s slogan “pay what you are paid”. And since women in the US get paid an average of 76 cents for every dollar men earn for the same job, it is only fair that they pay less.

As the store’s pricing policy was not enough to get the message across, Elana also distributed pamphlets(小册子). Entitled “What Are Women Worth?”, it explained the status of the wage gap both in Pennsylvania and across the country, and also gave women tips on how to better negotiate salaries. A 2015 study conducted by the Institute for Women’s Policy Research found that although the rate of women’s income has been rising, men still earn more in every state in the country.

Though the Less Than 100 project will not resolve the wage inequality, it is a thought-provoking way to bring to the forefront an issue that is increasingly causing a lot of worry among women. Fortunately, Elana is not the only one trying to change the unfair system. Ellen Pao, appointed as the temporary CEO of Reddit, recently announced that new employees would be forbidden from negotiating salaries. She believes that men are better negotiators than women, and therefore, tend to receive higher wages!

What’s encouraging is that male CEOs are also joining the fight! Earlier this month, Salesforce CEO Marc Benioff launched a company wide program to address the issue. Called “Women Surge” it aims to remove all gender-based pay inequalities, hire and promote more women and ensure that they are better included in meetings! With all these visionaries taking the lead, it will not be long before gender pay inequality is something we will only read about in history books!

China has recently been faced with serious issues of product safety. In Panama，it is said that medicine made with a poisonous chemical sickened some people.A Chinese company had identified it as diethylamide glycol(乙二醇)，a lowcost substitute commonly used in automobile antifreeze(防冻剂).

Some countries have banned Chinese­made toothpaste containing diethylamide glycol. China has now told companies to discontinue its use，even though it says the toothpaste is safe. Another industrial chemical，melamine，was found in wheat flour used to make pet food in North America.

Thousands of dogs and cats became sick.

The United States has restricted some imports of Chinese seafood because they contained banned substance. And questions have been raised about other products，including children's toys covered with lead paint.

Chinese officials promised to provide the European Union，the biggest trading partner，with detailed reports on enforcement efforts against unsafe goods.

Meglena Kuneva，commissioner(理事) for consumer protection of the European Union said China should have kept its promise.

China recently closed three companies linked to the Panama and the pet food scare. And it dismissed the former head of its food and drug administration. He was found guilty of corruption(腐败)for approving unsafe drugs. This week，a conference of the State Council approved a proposed special measure on the supervision of food safety. The Xinhua News Agency said it calls for stronger controls over producers，greater responsibilities for government and more serious punishment for illegal activities.

But Chinese officials have accused some foreign media of overstating problems with goods made in China. They say food imports from the United States also fail inspection sometimes. Next week，American and Chinese food safety officials are planning to hold 5 days of meetings in Beijing to discuss cooperation.

You might be familiar with the experience of looking through your Facebook,only to feel like everyone else's life is better than yours．

But such "social comparisons" may be connected with a higher likelihood of having depression．That's one finding from a new study that proved social media behavior has a connection with the mental(精神的)health condition．

In the study, the researchers studies information from around 500 undergraduate students who actively used Facebook,Twitter,Instagram or Snapchat and completed an online survey to examine certain social media behavior,as well as symptoms (症状)of depression．

The researchers found that people's reasons for using social media -whether it was out of boredom,or for entertainment or news -were not connected with depression.But how they were using social media was,indeed,connected to the condition．

The finding that people with depression were less likely to post photos of themselves with others may be related to the tendency (倾向)for people with depression to isolate themselves,said Anthony Bobinson,a psychology student at Texas State University．

In any case,it's not good to compare yourself to others who seem "better off" than you，Bobinson added."People want to make themselves look better off than they really are on social media" He said."This is not someone's 'real life. It's important to recognize that．"

The researchers also stressed that their findings didn't mean that social media use is necessarily a bad thing．

"I don't think it's always bad," Howard,one of the researchers,said."It can be bad,but it can also provide social support．It can give people a way to be around people that are similar to them." Finally，Howard hopes the study leads to ideas that may teach people how to use technology better rather than taking it away．